Changelog

Protect PDF — encrypt a PDF with a password (128-bit), entirely in your browser. No longer a stub.

Automated browser QA harness — every tool is now driven through a real headless Chromium and its output validated. 63/63 testable tools pass.

Faster homepage — the SPA bundle was split into a content-hashed, permanently-cached app.js. The HTML dropped from 465 KB to 80 KB; repeat visits re-download nothing.

Deep links to /t/… and /c/… were silently redirecting to the homepage — every shared tool link and sitemap URL was broken. Fixed with Cloudflare Pages Functions.

The service worker was failing every CDN library load (broke PDF, OCR, image and AI tools). Rewritten to never touch cross-origin requests.

compress-pdf crashed on a detached buffer · html-to-pdf crashed on a sandboxed iframe · qr-code and upscale-image had dead CDN URLs · OCR couldn't read PDF input — all fixed.

CSP worker-src widened so pdf.js and Tesseract get real workers instead of a slow main-thread fallback.

Service worker — UboraConvert now works fully offline after the first visit. Pages, libraries and tool definitions are cached.

PWA Share Target — install UboraConvert from your browser, then share files from any other app (Gmail, WhatsApp, Photos) directly into the universal tool picker.

Conversion preview thumbnails — every result file gets a "👁 Preview" button. PDFs render the first page; images show inline; text shows a snippet. Verify before downloading.

Tool-page breadcrumbs replaced the back button.

Comparison page at /compare — head-to-head vs iLovePDF, Smallpdf and TinyWow.

Sticky bottom action bar on mobile — the "Convert" button is always reachable while scrolling through options.

Fixed redirect loop on /status, /privacy, /terms caused by conflicting _redirects rules.

Hand-tuned meta descriptions for the 25 highest-traffic tools.

Custom 404 page with breadcrumb and popular-tools grid.

A11y: skip-link, focus-visible rings, modal focus trap, prefers-reduced-motion support, noscript fallback.

PowerPoint → PDF rendered as styled slides with title/bullets layout, embedded images, drop shadows. Previously was text-only.

Excel → PDF preserves table layout via SheetJS HTML export + html2canvas pipeline. Was a pipe-delimited text dump.

HTML → PDF actually renders HTML — headings, lists, tables, links all preserved. Was stripping all tags to plain text. Sandboxed iframe blocks injected scripts.

Real PDF compression — 4 modes (Extreme/Strong/Light/Lossless), per-mode DPI sizing, automatic fallback to lossless when raster output is bigger than source.

PDF → Word with formatting — bold/italic detected from font names, headings inferred from font size, paragraph joining adapts to the document's line spacing.

OCR fallback in PDF→Text/Word/Excel/CSV — scanned PDFs auto-detect and run Tesseract.

Smart error messages — "Password required" → "🔒 Use Unlock PDF first". "OOM" → "💥 Too large; try splitting it".

File validation — empty files, files over 500 MB, wrong-format files all rejected with named, actionable errors.

Camera input on mobile for image and OCR tools (📷 Take photo button).

Browser-wide drop catcher — files dropped anywhere on the page get routed to the right tool instead of opening in the browser.

Lazy-loaded libraries — homepage critical-path bundle dropped from 2.4 MB to ~400 KB. Each library only loads when its tool is opened.

Content Security Policy restored — only allows scripts from our origin and 3 known CDNs. Object/frame-ancestors locked down.

XSS hardening — escape function now covers quotes; html2pdf uses DOMParser instead of innerHTML.

Privacy & Terms pages at /privacy and /terms. Honest, verifiable, short.

Honest copy — removed misleading "encrypted in transit" / "auto-deleted in 1h" claims (we don't have a server). Replaced with verifiable "files never leave your browser".

~70 tools across PDF, Image, Spreadsheet/Data, OCR, Utilities. Background remover (AI, browser-only). Drag-to-reorder pages on Merge/Organize/Image-to-PDF. EPUB→PDF. Compare PDF. Sign PDF. QR generator. Hash calculator. JSON formatter. Etc.