Web-to-print without the recreation tax
Use the file you already have.
StackFill turns your existing print PDF into a fillable, on-brand template. Mark which fields are editable, lock the rest, and hand customers a link. They personalize. They pay. You get back a print-ready CMYK PDF — the same press output you always shipped.
No platform to learn. No designs to rebuild. CMYK preserved byte-for-byte.
Upload your master file
Drop in a finished print PDF — business cards, letterheads, badges, postcards. The parser keeps every CMYK ink, every spot color name, every Trim/Bleed box. Nothing gets rasterized; vector stays vector.
Mark what's editable
Click the fields a customer should fill — name, title, phone — and lock everything else with one toggle. Set fonts per element or one default for the whole stack. Brand stays exactly on-brand.
Send a fill link
Hosted by us, or embedded white-label on your site. Customer types in fields, previews against your design, optionally pays — and downloads a print-grade PDF/X-1a file ready for any RIP.
Built for the trade
Print shops still editing every variant by hand. Corporate marketing teams spinning a hundred badges off one master. Agencies sending personalization links to clients instead of versioning by hand. One template feeds one customer or a thousand — same engine.
We render through pdf-lib + Ghostscript to PDF/X-1a:2001 with the ICC OutputIntent attached, crop and registration marks drawn, and a full preflight pass. Pure black text stays pure-K. No headless-Chromium tricks.
What's not StackFill
- Not a design tool — you don't create artwork from blank canvas.
- Not an e-sign or generic PDF form — we produce print-grade CMYK collateral.
- Not a storefront or print MIS — we drop into the one you have.
- Not a template marketplace — your file is the template.