https://pdfops.dev/blog Posts about PDFops — the edge-native PDF fill & merge API: how to use it, why it exists, and what's coming next. en Fri, 07 Aug 2026 00:00:00 GMT https://pdfops.dev/blog/filling-encrypted-government-pdfs https://pdfops.dev/blog/filling-encrypted-government-pdfs Some government blanks open fine in any viewer but crash every PDF library at load. Why an empty user password does that, and a measured matrix of what fills CA FL-100 and CRA TD1: pdftk-java natively, qpdf --decrypt for everything else. Fri, 07 Aug 2026 00:00:00 GMT https://pdfops.dev/blog/merge-pdfs-bun-server https://pdfops.dev/blog/merge-pdfs-bun-server A Bun.serve() endpoint that merges uploaded PDFs in order via PDFops, checks quota before it burns the last request, and handles the 429 that shows up the day traffic actually arrives. Thu, 06 Aug 2026 00:00:00 GMT https://pdfops.dev/blog/pdfops-v0-10 https://pdfops.dev/blog/pdfops-v0-10 Release notes for PDFops v0.10 — fill@pdfops.dev turns email into an API call, /tools/make-fillable turns flat PDFs into AcroForm templates in the browser, and every fill is now byte-deterministic with an optional flatten step. Thu, 06 Aug 2026 00:00:00 GMT https://pdfops.dev/blog/snapshot-testing-pdfs-in-ci https://pdfops.dev/blog/snapshot-testing-pdfs-in-ci A headless-browser PDF renderer stamps a new timestamp and reorders internal objects every run, so byte-diffing its output in CI always fails. A deterministic fill API fixes that, with a worked GitHub Actions example. Thu, 30 Jul 2026 00:00:00 GMT https://pdfops.dev/blog/migrating-off-wkhtmltopdf-on-lambda https://pdfops.dev/blog/migrating-off-wkhtmltopdf-on-lambda wkhtmltopdf is archived, its last release carries an unpatched CVSS 9.8 SSRF, and it still ships as a Lambda Layer binary. If what you render is form-shaped — invoice, receipt, statement — here's the fill-form swap that drops the binary entirely. Thu, 23 Jul 2026 00:00:00 GMT https://pdfops.dev/blog/kyc-packet-on-deno-deploy https://pdfops.dev/blog/kyc-packet-on-deno-deploy Discover a template's fields at request time, fill it, and merge in the applicant's ID scan — one PDF packet, chaining PDFops' three primitives with the new pdfops-sdk on Deno Deploy. Tue, 21 Jul 2026 00:00:00 GMT https://pdfops.dev/blog/fill-pdf-in-a-cloudflare-worker https://pdfops.dev/blog/fill-pdf-in-a-cloudflare-worker Headless Chrome doesn't run on Cloudflare Workers and a PDF render layer doesn't belong on Lambda. Here's the minimal Worker that fills an AcroForm PDF with one fetch — and why the substrate is the whole point. Tue, 30 Jun 2026 00:00:00 GMT https://pdfops.dev/blog/deterministic-pdf-filling https://pdfops.dev/blog/deterministic-pdf-filling AI can read almost any document now. But the write step — filling an official PDF — can't be a language model if an auditor might ever look at it. Why the AI-extraction wave needs a deterministic fill step. Tue, 09 Jun 2026 00:00:00 GMT https://pdfops.dev/blog/fill-and-merge-pdfs-in-your-browser https://pdfops.dev/blog/fill-and-merge-pdfs-in-your-browser Fill a PDF form or merge several PDFs into one, right in your browser — free, no signup, no install. The same is one HTTP call away when you automate it. Wed, 27 May 2026 00:00:00 GMT https://pdfops.dev/blog/signed-contracts-from-tally-on-workers https://pdfops.dev/blog/signed-contracts-from-tally-on-workers Fill a contract template from a Tally form's answers and email back a counter-signed PDF — webhook, PDFops fill-form, R2, and email on one Cloudflare Worker. Sat, 23 May 2026 00:00:00 GMT https://pdfops.dev/blog/audit-trail-pdfs-nextjs https://pdfops.dev/blog/audit-trail-pdfs-nextjs Chain PDFops /fill-form and /merge in one Next.js Server Action to add a who/when/where cover page to any signed document — a built-in audit trail. Wed, 20 May 2026 00:00:00 GMT https://pdfops.dev/blog/fill-w9-from-webhook https://pdfops.dev/blog/fill-w9-from-webhook When a contractor finishes onboarding, auto-fill their W-9 from the answers they already gave — webhook, PDFops fill-form, and Vercel Blob on Vercel Edge. Mon, 18 May 2026 00:00:00 GMT https://pdfops.dev/blog/monthly-pdf-bundles-on-cron https://pdfops.dev/blog/monthly-pdf-bundles-on-cron Build monthly per-customer statement bundles — sections from templates, merged into one PDF, stored and emailed — on a Cloudflare Worker fired by Cron. Thu, 14 May 2026 00:00:00 GMT https://pdfops.dev/blog/stripe-invoice-pdf-workers https://pdfops.dev/blog/stripe-invoice-pdf-workers When a Stripe payment succeeds, generate an invoice PDF from a template and store it — webhook handler, PDFops fill-form, and R2 on one Cloudflare Worker. Wed, 13 May 2026 00:00:00 GMT https://pdfops.dev/blog/getting-started https://pdfops.dev/blog/getting-started 30 seconds to a working PDF API call. Two curl commands for fill-form and merge, the per-IP rate limit, and what's coming next. Tue, 12 May 2026 00:00:00 GMT https://pdfops.dev/blog/why-pdfops https://pdfops.dev/blog/why-pdfops An operator's account of why a hosted PDF API for edge runtimes exists — and why DocRaptor, PDFShift, and self-hosting don't fit modern edge-deployed stacks. Mon, 11 May 2026 00:00:00 GMT