Print preparation toolkit
Free tools for accurate print preparation.
Check whether an image is sharp enough to print, convert paper sizes and weights, prove your printer really is at 100%, and generate true-size PDFs for labels, cards, rulers, graph paper and tiled posters. Every tool runs in your browser. Nothing is uploaded.
Tools
Pick a tool, get a result.
All 12 run entirely in your browser.
Envelope finder
Pick a paper size and a fold and see which standard envelopes take it — DL, C4, C5, C6, US #10 — with the clearance in each.
OpenPaper weight converter
gsm to pounds and back, by grade — because 80 lb Text is 118 gsm while 80 lb Cover is 216 gsm. Plus sheet and ream weights.
OpenPaper size converter
Convert between mm, cm, inches and pixels at any DPI for every standard size from A0 to Tabloid — with the photocopier scaling percentages (A4→A3 141%, A3→A4 71%) for each target sheet.
OpenImage print quality analyser
Drop in a photo and see how large it prints well, the effective PPI on any sheet, and what its embedded DPI actually claims.
OpenDPI / pixel calculator
Calculate the pixel dimensions needed for a given physical size and DPI. Useful for sizing images for print.
OpenPoster split calculator
Split an image or PDF into a print-ready tiled PDF across A4 sheets — cut marks, overlap and alignment guides, all in your browser.
OpenSheet layout calculator
Enter an item size and see how many fit on A4 or Letter, how to arrange them, and how much paper is wasted — with cut guides.
OpenLabel sheet generator
Build a printable label sheet (PDF + SVG) at any rows × columns — and fill it with your text or a pasted address list, one entry per label.
OpenBusiness card template generator
Print-ready business card templates (PDF + SVG) with bleed, crop marks and safe-area guides — or type your name and details for a finished minimal card. US, EU, UK and Japan sizes.
OpenGraph paper generator
Generate printable square-grid, dot-grid or isometric paper (PDF + SVG) at any metric or inch spacing, with major/minor marks.
OpenPrint scale calibration test
Print a sheet with a 100 mm square, measure it, and get the exact percentage your printer produced — plus the corrective scale to fix it.
OpenPrintable ruler
Generate a printable ruler in mm, half-mm or inches, up to 560 mm — or an architect’s scale rule, metric 1:20 to 1:2500 plus the US architectural and engineer scales — as a true-scale PDF with a built-in accuracy check line, or as SVG.
OpenBrowse
Template categories
How these tools work
Calculated, not approximated.
Every output is produced locally from the dimensions and files you provide — a 100 mm square measures 100 mm, a 5 mm grid measures 5 mm. Files download as true-scale PDF or as SVG that stays sharp at any zoom and opens in any vector editor.
Why size, bleed and DPI matter
Small numbers, big consequences.
A document set up at the wrong DPI will look soft when printed. A card without bleed will show a sliver of white on the edge after trimming. A label sheet that is 1 mm off can throw thirty labels out of alignment. The tools here are designed to help you avoid those failures.
Read the printing guides →No signup
Every tool is open and free. No account, no email, no paywall.
Nothing is uploaded
Calculations and templates are generated in your browser. Your design never leaves the device.
Original templates
Templates are generated from public specifications and standard print conventions, not copied from any third party.