PrintReadyKit

Releases

Changelog

What changed and when, in plain language. Corrections are listed alongside features — if we fixed a wrong number, it says so here.

By PrintReadyKitPublished 11 July 2026, reviewed 24 August 2026

v1.53.02026-08-24

  • Correction: the ruler preview took its height from whatever length you had chosen, so switching from 2 cm to 5 cm moved everything below it by more than 300 pixels. The preview now keeps a constant height and the drawing sits inside it — which also means a 2 cm rule finally looks smaller than a 50 cm one instead of both filling the box.
  • The paper size chart kept people reading for over half a minute and offered a tool only at the very bottom. Converting a size to pixels, scaling between sizes and fitting items on a sheet are now offered where the table starts.
  • Links from a page into a tool now record where on the page they were — a sentence in the text, the task list under the answer, or the cards at the foot. Without that the reporting could say someone moved from the size chart to the converter and nothing about which route they took, which is the only thing worth knowing after moving those routes.
  • The size comparison pages state the exact percentage to scale between two sheets and then offered nothing to do with it until the very bottom of the page. Each one now points at the converter where the intro explains the relationship, and the index does the same for pairs it does not cover.
  • The DL envelope page now says plainly that window position is not standardised between manufacturers, and that the only reliable check is a folded letter in an envelope from the box you will actually use. It gave a position and left the impression it was a specification.
  • The paper size dataset is now published as CSV as well as JSON, generated from the same rows, so it opens in a spreadsheet without anyone having to convert it. The page also gives a citation line to copy, since the licence asks for attribution and it should not be work to provide it.
  • The European and US business card pages give the dimensions and said nothing about printing a sheet of them. Both now say how many fit — nine on A4 turned sideways, eight on Letter — and link to the calculator that arranges them.

v1.52.02026-08-24

  • The sheet layout calculator now offers the large poster sheets — A2, A1, A0 and B2, the one sold as 50 × 70 cm — because the question people arrive with is how many A4 fit on one of them.
  • It also explains, in words rather than only in the result, why turning an item sideways or closing the gap changes how many fit. The same A4 sheet holds eight business cards upright, nine turned, and ten with neighbouring cards sharing a cut line.
  • How to print actual size now covers the Edge PDF viewer, which Microsoft has moved to an Adobe engine with its own Page Sizing control separate from the print dialog — and answers why the actual size option is sometimes greyed out, which is almost always a paper size mismatch in the driver.
  • The paper size chart, and six other pages, had search descriptions long enough to be cut off mid-sentence. Shortened to say what the page has that the search result cannot show.
  • Added a favicon. Every browser and crawler asks for one, and this site was answering with a 404.
  • Removed a non-standard line from robots.txt that only one search engine reads and Search Console was flagging.
  • The A4 versus A5 page now uses both phrasings. People search it in either order and the page only ever said one of them.
  • The points page and the scaling guide keep people reading for over half a minute and then sent nobody anywhere — the link to a tool sat three quarters of the way down. Both now offer the relevant tool in the opening paragraph.
  • The actual size guide now says, near the top, that setting the option is the easy half — and offers the one-page calibration sheet that tells you whether it actually worked. It is the question people arrive with and the guide used to answer it a third of the way down.
  • The graph, dot grid, isometric and European business card pages named their free generator at the end of a search description too long to show it. The generator is now the first thing the result says.
  • Every paper size page now says in its search listing what you can do on it — tile it across A4, check a photo is sharp enough, work out how many fit — rather than repeating the dimensions the result already shows. Six pages were still leading with numbers a searcher can read without clicking.
  • The image quality tool now answers whether 72 or 150 DPI is printable, which depends entirely on viewing distance: 287 at arm-in-hand, 143 at arm’s length, 44 on a large format print seen from two metres. It could already work this out and never said so in those terms.
  • The search descriptions on the A1 to A4 pages put the dimensions first and the reason to visit last, where the search result cut it off mid-sentence. Reversed: the numbers are already in the search result, what is not is that you can tile a large sheet across ordinary paper or check a photo will hold up.
  • The A5 page explains printing two pages per sheet in four places and never mentioned the calculator that does it for any other size. It does now.

v1.51.02026-08-19

  • Correction: "continue on another device" was carrying only part of the setup. A sheet layout arrived without its margin, a label sheet without knowing which paper it was for, a custom paper size or custom card as the default preset instead, and a ruler measured in inches lost the fraction — six inches reopened as 152 mm rather than 152.4, which is no longer six inches. All of it travels now; what you typed still does not.
  • Correction: a shared graph paper link asking for eighth-inch spacing came back at half an inch. The spacing was checked against millimetres before the link had said it was working in inches.
  • Correction: the cut guides PDF recorded a successful download the moment the button was pressed rather than when the file existed, so a failure counted as a conversion. The button now waits, reports failure as failure, and cannot be pressed twice.
  • Correction: pressing Share and then cancelling was recorded as a share, and a share that fell back to copying the link was recorded as a share too. Both now report what actually happened.
  • The remaining eight option buttons — print direction, grid style, card layout, envelope fold, calibration paper and reference, label content mode — now tell screen readers which one is selected. Previously only the colour said so.
  • The calibration sheet button can no longer be pressed twice while it is working, and says so if the file cannot be built rather than appearing to do nothing.

v1.50.02026-08-18

  • Correction: the business card preview worked out how much room text needs using a figure three times too large, then shrank the type to compensate. A job title that printed at 12 point appeared at 5.5 in the preview, so the card on screen was not the card that came out of the printer.
  • The same estimate now accounts for letter shapes rather than using one average width. A line of capitals is far wider than a line of lower case, and treating them alike let text look like it fitted when it did not.
  • The unit, precision and shape buttons now announce which one is selected to screen readers. A sighted visitor sees the active colour; without this, nobody else could tell.
  • Errors and the poster tiling progress are now announced as they happen instead of appearing silently.
  • The estimate of how wide text will print was refined again after testing found it could still be a point out on unusual strings. It now errs on the cautious side in every case measured.
  • The same width error turned out to exist a second time, in the label generator, with a different wrong constant. Both now share one calculation, so a label preview shows the type size the PDF will actually use.

v1.48.02026-08-18

  • Correction: a shared setup link promised to reopen the tool exactly as you left it, and two tools quietly dropped part of it. The business card generator forgot the bleed and safe margin, and the size converter forgot the resolution and unit — the settings most likely to have been changed on purpose.
  • Correction: the bookmark prompt told iPhone and iPad users to press a key combination those devices do not have, and Android users a different one they also lack. It now names the button that actually exists on the device.
  • Correction: dismissing that prompt lasted until the next page. It now stays dismissed for the rest of the visit, which is what it always said it did.
  • Wording: the envelope finder listed "every standard envelope" when it holds the common ones, the paper weight calculator offered "any standard size" while carrying ten, and the size chart called itself complete. All three now describe what they actually contain.

v1.47.02026-08-18

  • Correction: a JPEG can record its resolution in two places, and the analyser stopped at the first one it found. When the two disagreed — which happens whenever one editor writes a value and another does not update it — you were shown one figure with no hint that the file contained another. Both are now read, and a disagreement is reported rather than resolved silently.
  • Correction: images can declare a different resolution horizontally and vertically. Only the horizontal one was read, so a file with non-square pixels reported a single confident number that was true in one direction and wrong in the other. Both axes are read now, for JPEG and PNG alike.
  • Correction: the reading of how hard a file was compressed is calibrated for photographs, and was being applied to every format. PNG owners were told their lossless file was heavily compressed and warned about artefacts that cannot occur in it. The file type is now identified from its own header and the explanation matches it.
  • Correction: the wording said a barely compressed file had discarded nothing, while listing top-quality JPEG as an example. A JPEG always discards something.
  • Correction: the scaling percentages ignored the possibility of turning the paper. An A4 landscape page onto A3 was reported as unable to enlarge at all, when turning the sheet allows 141%. Rows that need the paper turned now say so.
  • The sheet layout fields no longer accept values the calculator then ignores: a negative margin showed as typed and quietly produced an answer for a different sheet.
  • The label generator now refuses grids large enough to overwhelm the browser, at a limit far beyond any real label stock.

v1.46.02026-08-18

  • Correction: the printable ruler sat hard against the top-left corner of the sheet. Home printers cannot reach the outer few millimetres, so the half-millimetre marks vanished and the centimetre marks lost their first third — on the one tool where being the right size is the entire point. The rule now sits 10 mm inside the edge.
  • The ruler you print from the preview now carries the same accuracy check as the PDF: a line of stated length to measure, and the reminder to print at 100%. Without it there was no way to tell that a printer had quietly scaled the sheet.
  • Correction: Print preview sent the drawing to whatever sheet the browser defaulted to, and let it shrink to fit. A 20 cm rule went onto a portrait sheet too narrow to hold it and came out smaller than asked. It now selects the sheet, pins the drawing to its real dimensions, and says to use the PDF when nothing fits.
  • The note about which page the PDF will use is now taken from the page chooser itself. It had stopped at A3 while the FAQ below it went on to mention A2.

v1.45.02026-08-17

  • Correction: the ruler accepted lengths up to 560 mm everywhere except the box you type in, which silently capped at 300. Typing 400 gave you 300 with no explanation, on the most used tool on the site.
  • Correction: choosing a US architectural scale left the page size on A4 if it had been metric before, so an architect asking for a 1/4 inch scale rule got it on the one sheet their printer is least likely to hold at true size. The paper now follows the scale.
  • Correction: the graph paper generator advertised 1/8 and 1/4 inch spacing and refused to accept either — the smallest it allowed was half a millimetre regardless of unit.
  • Correction: a shared graph paper link carrying an absurdly small spacing could lock up the browser building the PDF. Preview and PDF now clamp identically.
  • Correction: the built-in round sticker layout was rejected as too tall by the checker, although it fits an A4 sheet with 13 mm to spare. The checker assumed the bottom margin had to match the top.
  • Correction: round labels sat off-centre whenever the label was wider than it was tall — up to 17 mm out on a wide cell.
  • Correction: switching the pixel calculator between millimetres and inches kept the numbers and changed their meaning, so an A4 sheet became a five-metre one and the pixel count came out 25 times too high.
  • The image analyser now refuses images that are enormous once decoded rather than only enormous as files; a 200 megapixel photo can be a small download and still exhaust the browser.
  • The poster splitter now releases each PDF before opening the next, instead of holding every document opened during a visit.
  • Correction: the sheet layout page said nine US business cards fit a Letter sheet. Its own calculator says eight at the settings shown.
  • Correction: the envelope finder listed the roomiest match first rather than the closest. Asking for an A4 sheet folded once put C4 at the top, an envelope nearly twice the size of the contents, ahead of the C5 that is the answer.
  • Correction: filling in a business card — name, title, contact details, layout — was not recorded as using the tool, and neither was uploading a poster. Both counted only a handful of settings.
  • The two lists of paper dimensions are now checked against each other at build time. They agreed, but nothing said so, and a list kept in two places is where every content error on this site has come from.
  • The A-series descriptions in the data layer said "half of A4" where the pages themselves explain that each step is nominally half and rounds down. A5 is 0.34% short of half an A4, and the wording now says so.
  • The business card generator now says when no bleed means no crop marks, and warns when the safe margin leaves too little room to design in.

v1.43.02026-08-17

  • Correction: the new engagement measurement counted arriving through a share link as using the tool. Five tools restore their settings from the URL, and the related-links cards pass the paper size along, so the most common route from a size page into a tool was being recorded as activity before the visitor touched anything.
  • Correction: downloads were recorded when the button was pressed rather than when the file existed. A PDF that failed to build still counted as a download, and the poster splitter — the one most likely to run out of memory — was the worst affected. Failures are now recorded as failures.
  • The image analyser was listed under Generators although it produces no file, and the poster splitter under Reference although it produces a PDF. Both moved, and the description above the section is now written from what the tools actually output.
  • The Terms and Privacy pages carried dates from before they were last rewritten, and the changelog said it was reviewed in July while listing an August release. All three now reflect reality.
  • Security: the poster splitter opens PDFs you choose, and the library it uses had an advisory allowing a malicious file to run code in the page. Upgraded to the fixed release, with form scripting switched off as well — the splitter rasterises pages and never needs it.
  • The pdf.js worker file was a hand-made copy that had to be replaced by hand whenever the library changed. It is now copied at build time, because a mismatch there breaks PDF opening for visitors while leaving every build check green.
  • Share and copy actions were being recorded as clicks through to another tool, which made the one question that measurement exists to answer — how many people move from one tool to a second — unanswerable. They are now separate.
  • The social preview image was being served as an unknown file type, which meant it could refuse to render when a link was shared. It now declares itself as an image.
  • Next.js writes a plain-text copy of every page beside it, carrying the same words, for the browser to use when navigating. Search engines are now told to leave those copies alone; the pages themselves, the dataset and llms.txt are unaffected.
  • The Tools page described six of the twelve tools in its search listing, and the reference section promised only conversions although it now holds the photo resolution checker. Both rewritten.
  • Wording corrections: ISO 269 is described as withdrawn rather than normative on the DL envelope page, an unsourced claim about how long people look at flyers is gone, and the homepage no longer says every output is generated mathematically now that some are produced from files you supply.

v1.42.02026-08-17

  • The five tools that produce a file now record that someone changed a setting, not only that they downloaded. Until now a generator reported its successes and nothing else, so there was no way to see how many people opened the ruler and left without a PDF.
  • The points page gave its whole answer in the search result: four sizes in pt, and no reason to open it. It now leads with A4 and points to what the page has that the snippet cannot — the full table for 48 sizes, and why your PDF reads 595.28.
  • The A4 flyer page listed specifications and offered nothing to do with them. It now links to the resolution check and the paper weight converter from the paragraphs that raise those exact questions.
  • The ruler is the most used tool on the site and was reachable from five pages out of seventy-eight. Three guides that already talk about measuring — turning off fit-to-page, choosing a scaling option, and drawing on isometric grids — now say where to get one.

v1.41.02026-08-16

  • The scaling guide never used the words half its readers do. Print dialogs say “Fit to paper” as often as “Fit to printable area”, and the page used only the second. Both are listed now, along with “Fill page” — which is a genuinely different behaviour that crops rather than shrinks, and was missing entirely.
  • How to print actual size now covers Word, Excel and Publisher, and explains that the printer driver has its own scaling control behind the Properties button — the usual reason a print comes out small when every visible setting looks right.
  • How many A4 fit in A2, A1 or A0: a question the sheet layout calculator could not answer, because it reasons about printer margins and ISO nesting has nothing to do with them. The counts are exact and derived from the size data, with a build-time check that the two ways of calculating them agree.
  • Fixed: links from article text into the tools were never counted, so the reporting could show the cards at the foot of a page going unused while saying nothing about the sentence halfway down that actually sends people there.
  • Fixed: events fired before the analytics script finished loading were discarded rather than queued. Anything done in the first seconds of a visit went unrecorded, including errors — which is why the error counter read zero while real failures were being observed in the field.
  • How to print actual size now answers whether the setting can be made permanent. It mostly cannot in a browser, and saying so is more useful than leaving people hunting for a switch that does not exist.

v1.40.02026-08-15

  • Correction: the scale ruler page said imperial scales were not supported. They have been in the generator since 1.28 \u2014 ten US architectural scales and six engineer scales. The page now lists all of them with the ratio behind each, and answers what 1/4\u201d = 1\u2019-0\u201d is as a ratio (1:48).
  • The page and the generator now read their scale list from one place, so the two cannot describe different tools again.
  • Two metric ratios the generator offers, 1:5 and 1:10, were missing from the reference table and are now listed.
  • Correction: the machine-readable index at /llms.txt listed seven of the twelve tools, leaving the calibration test, the image analyser, the paper weight converter, the envelope finder and the sheet layout calculator invisible to the assistants that cite this site. It is now generated from the same tool list the rest of the site uses.
  • The sitemap now takes its tool URLs from that same list too, and the build fails on a duplicate entry rather than shipping one.
  • Seven tool descriptions were long enough to be cut off in search results, hiding the end of the sentence. Shortened without losing what each tool does.

v1.39.02026-08-14

  • Corrections across the trust pages, and the \u201ceditorial team\u201d wording removed \u2014 this is independently maintained, and naming a team overstated it.
  • Three contradictions fixed where a page described a tool as it used to be: the ruler\u2019s units, the size chart\u2019s halving claim, and the A5 fold.
  • Settings can now be carried to another device from six tools rather than one.

v1.38.02026-08-13

  • Size comparison pages now offer a next step — they were the only pages on the site that answered a question and left you there.

v1.37.02026-08-13

  • The printable ruler can now mark half-millimetres, for model making and machining, and prints up to 560 mm across A4, A3 or A2.

v1.33.0 – 1.36.02026-08-12

  • A1 and A2 pages rebuilt with full pixel tables and the comparisons people actually make — A1 against a 24 × 36 inch poster, A2 against an 18 × 24 inch frame.
  • The bleed guide now leads with the number people search for: A4 with 3 mm bleed is a 216 × 303 mm canvas, and every other standard size alongside it.
  • Every size page answers “How big is it?” in those words, and offers the next task rather than only the dimensions.
  • The actual-size guide routes to the tool that does the specific job — tiling, layout, resolution — instead of only explaining the setting.

v1.31.0 – 1.32.02026-08-12

  • New: how many fit on a sheet. Enter an item size and see the arrangement, the wasted paper and a printable sheet of cut guides. Nine business cards fit an A4 — but only turned sideways.
  • New: whether Tabloid, Ledger, ANSI B and 11 × 17 are the same sheet (they are), and how each differs from A3 (considerably).
  • The DPI guide now compares 72, 150 and 300 directly, because resolution counts in two directions and the difference is larger than it looks.

v1.25.0 – 1.30.02026-08-11

  • Errors now show a page you can leave from, instead of a blank screen — and report themselves so they can be fixed.
  • The printable ruler gained US architectural and engineer scales: ¼” = 1’-0” through 1” = 100’.
  • The image analyser answers the question people actually ask — whether a file of so many kilobytes is enough — and explains why file size cannot settle it.
  • Envelope finder covers window envelopes and where the address has to sit on the sheet.
  • Graph paper adds B5 and B6, the notebook sizes most dot-grid printing is aimed at.
  • After a download, a quiet prompt to keep the link — and a way to send your settings to another device.

v1.22.0 – 1.24.02026-08-04

  • Layout stability fixed properly: an earlier attempt made it worse, which the field measurements showed plainly.
  • Tool usage is now measured — which tools produce files, and in what format. Nothing you type or upload is ever included.

v1.21.02026-08-02

  • New: RGB vs CMYK guide — why print never matches the screen, which colours do not survive, rich black, ink coverage limits. Deliberately no converter: without an ICC profile any conversion is a guess, and we would rather say so than bury a disclaimer.

v1.20.02026-08-02

  • New: paper weight converter — gsm to pounds by grade, because 80 lb Text is 118 gsm while 80 lb Cover is 216 gsm. Checked against 17 published industry equivalences.
  • The poster splitter now refuses oversized jobs with an explanation instead of freezing the browser.

v1.19.02026-08-01

  • New: image print quality analyser — drop in a photo and see how large it prints well, the effective resolution on any sheet, and what its embedded DPI actually claims. Reads JPEG and PNG resolution headers in your browser, without uploading.

v1.18.02026-08-01

  • New: print scale calibration test — a sheet with a 100 mm square and two line references that tells you the exact percentage your printer produced, and the corrective scale to reprint at.

v1.17.02026-07-30

  • New: every paper size in points and picas, with the exact fractional values PDF tools store.
  • Points added to the size converter, the 48-size chart and the open dataset.
  • Two layout-stability and load-speed fixes traced from real visitor measurements.

v1.16.02026-07-29

  • The printable ruler now generates architect scales from 1:20 to 1:2500, with a guide explaining which ratio suits which drawing.
  • The poster splitter preview now shows your own artwork behind the cut lines.

v1.15.02026-07-29

  • New: envelope finder — pick a paper size and a fold, see which standard envelopes take it and with how much room.
  • New: isometric grid mode and a guide to the 30-degree drawing lattice.
  • Proper app icons, so the site installs cleanly to a home screen.

v1.14.02026-07-29

  • The business card generator can now produce a finished minimal card from your name and details, not only an empty guide template.
  • The size converter now shows photocopier scaling percentages — A4 to A3 is 141%, A3 to A4 is 71%.

v1.13.02026-07-28

  • Label sheets can now be filled in directly: the same text on every label, or an address list pasted in with one entry per label, across as many pages as needed. No Word merge required.

v1.12.02026-07-28

  • New: dot grid mode for the graph paper generator, plus a guide to the bullet-journal layout.

v1.9.0 – 1.11.42026-07-26

  • Analytics added, with consent handled by region and advertising storage off everywhere.
  • Every paper size page now draws a credit card at the same scale, as a physical reference.
  • Rebuilt the paper sizes hub, added entity markup, and consolidated www and preview domains onto one canonical address.

v1.8.02026-07-11

  • New: the complete paper size chart — all 48 sizes across ISO A/B/C, US, ANSI and ARCH, with a downloadable 2-page PDF.
  • New: open data — the full size catalogue as a CC-BY JSON dataset at /data/paper-sizes.json, generated from the same source file as the site tables.
  • New: comparison hub and this changelog.

v1.7.02026-07-11

  • Rebuilt the graph-paper reference page (grid naming, paper weights, an honest note on what the generator does not do).
  • Enriched all flyer, label and business-card template pages with verified specs: exact bleed-inclusive pixel sizes, label-stock guidance, barcode quiet zones, the closed arithmetic of the 30-up sheet.

v1.6.02026-07-11

  • Rebuilt the US Legal and Tabloid pages — including the honest note that most US courts now require Letter, and the Tabloid/Ledger naming explained.
  • Expanded all four envelope pages with printing-and-mailing guidance and folding maths.

v1.5.02026-07-11

  • Rebuilt the US Letter page around its exact-pixel property (inch-defined sizes give whole pixels at every DPI).
  • New: the A4 vs US Letter comparison — scaling rules and the universal layout box.

v1.4.02026-07-11

  • True-scale PDF downloads on every generator: ruler (with a printed accuracy-check line), graph paper, label sheets and business-card templates.
  • Fixed two inaccuracies: a claim that 300 mm fits on A4, and a tools listing that promised grid types the generator does not offer.

v1.3.02026-07-10

  • The poster split calculator became a real tool: upload an image or PDF and download a tiled, print-ready PDF with alignment guides and cut marks — everything runs in your browser, nothing is uploaded.

v1.2.12026-07-10

  • Accuracy and privacy pass: every "exactly" claim audited against the standards, duplicate structured data removed, redirects consolidated to a single canonical host, and the privacy policy rewritten to describe precisely what runs here (cookie-less analytics, no personal data).

v1.1.0 – 1.2.02026-07-09

  • Rebuilt the A0–A6 reference pages with per-size pixel tables, design specs and FAQ; added the first size comparisons and the poster tiling calculator.

v1.0.02026-05-16

  • Initial launch: paper-size references, unit and DPI converters, printable templates and printing guides.