PDF Toolbox

Static browser-only PDF toolbox for Cloudflare.

Features

• Merge PDFs in the browser
• View the selected source PDF immediately after upload
• Select pages visually from the active PDF
• Insert blank pages after selected source pages
• Add text or image stamps to selected pages
• Upload photographed document images and auto-align each trapezoid into a rectangular PNG
• Adjust detected image corners, straight edges, or curved edges manually and rotate source images before export
• Download one rectified image or all generated images as a ZIP
• Extract selected pages into a new PDF
• Remove selected pages from PDFs
• Rotate selected pages while leaving the rest of each PDF in place
• Duplicate selected pages inside each PDF
• Select page ranges per input file
• Rotate individual inputs
• Reverse selected pages per input file
• Fit source pages onto A4 or Letter output pages
• Add front and end blank pages
• Add a cover page
• Add a table of contents
• Add separator pages between queued PDFs
• Insert duplex blank pages so sections can start on right-hand pages
• Add page numbers to the output
• Scope page numbers to all pages, non-front-matter pages, or source pages only
• Add source filename labels to copied source pages
• Add a date stamp
• Apply a text watermark stamp
• Flatten form fields before merging
• Set PDF title, author, and subject metadata
• Preview the modified PDF before download

Cloudflare Workers Build Settings

• Framework preset: None
• Build command: npm run build
• Deploy command: npm run deploy:cloudflare

The project deploys as a Worker with static assets from dist/. The wrangler.toml file provides:

[assets]
directory = "./dist"

If using a normal Cloudflare Pages project instead of Workers Builds, use:

• Build command: npm run build
• Build output directory: dist
• Deploy command: npm run deploy:pages

The Pages deploy path requires an API token with Account > Cloudflare Pages > Edit permission.

For a manual Wrangler deploy from a local machine, use:

npm run deploy