Every PDF operation, in your browser.
Almost every "free PDF tool" on the open web — Smallpdf, iLovePDF, Adobe Online — uploads your file to their servers, processes it on hardware you don't control, and emails you a download link. The fine print says they delete it after an hour or a day. The reality is that you handed your contract, tax return, or medical record to a third party, and you have no way to verify what they did with it. CipherForces takes the opposite approach: every PDF tool runs entirely inside your browser using WebAssembly builds of pdf-lib, pdfjs-dist, and tesseract.js. Open DevTools, watch the Network tab, drop your file in — you will not see a single upload request. The math is the same; the privacy posture is the inverse.
22 pdf tools.
Add Page Numbers
Put page numbers on every page of a PDF.
Open toolAnnotate PDF
Highlight text, draw on pages, and add inline text notes to any PDF.
Open toolCombine PDFs
Join multiple PDF files into one document.
Open toolCompare PDFs
Visual pixel-level or text line-level diff between two PDFs, page by page.
Open toolCompress PDF
Make PDF files smaller without losing quality.
Open toolCrop PDF
Trim the margins of PDF pages.
Open toolExtract Images from PDF
Pull every embedded image out of a PDF as PNGs — individually or as a zip.
Open toolFill PDF Form
Type into fillable PDF forms.
Open toolFlatten PDF Form
Lock AcroForm field values into the page so the form can no longer be edited.
Open toolImages to PDF
Turn images into a PDF document.
Open toolMarkdown to PDF
Turn any Markdown into a beautifully formatted PDF — headings, code, tables.
Open toolPassword Protect PDF
Add a password to lock your PDF.
Open toolPDF Batch Processor
Compress, watermark, and protect multiple PDFs at once.
Open toolPDF Text Recognition
Extract text from scanned PDFs as a plain-text file using in-browser OCR.
Open toolPDF to Images
Convert PDF pages into JPG or PNG images.
Open toolPDF to Word
Convert PDF files to editable .docx Word documents — entirely in your browser.
Open toolRedact PDF
Black out sensitive text in a PDF.
Open toolReorder PDF Pages
Drag pages to rearrange your PDF.
Open toolRotate PDF Pages
Rotate any page in your PDF.
Open toolSign PDF
Draw or type your signature on a PDF.
Open toolSplit PDF
Break a PDF into separate pages or sections.
Open toolWatermark PDF
Add text or image watermarks to every page.
Open toolBuilt for privacy, breadth, and speed.
Nothing leaves your device
Every PDF you process — merge, split, compress, OCR, redact, sign — runs locally. No upload, no server-side storage, no auto-delete-after-an-hour theater.
Works on iPhone, Android, desktop
WebAssembly builds run in any modern browser. iPhone Safari, Chrome on Android, Firefox on Linux — same toolset.
No file-size or daily limit on most tools
A 50-page contract, a 200-page eBook, a 600-MB scanned archive — runs the same as a one-pager. No watermark, no signup, no email gate.
Same toolkit Adobe charges $20/month for
Merge, split, compress, OCR, redact, password-protect, watermark, page numbers, page reorder, signature, form-fill — all included. Pay once if you want unlimited; the daily free tier covers most use.
People ask these things.
How do I redact a PDF without sending it to a server?
Use our PDF Redactor tool. It loads your file in the browser, lets you drag rectangles over sensitive content, and re-exports a flattened PDF with the redacted regions baked in as black bars. The original file never leaves your device.
Can I OCR a scanned PDF for free?
Yes. PDF OCR runs Tesseract.js (the same OCR engine Google originally built) entirely in your browser. Works on most languages. Larger files take longer but never hit a server.
Why do I need a "no upload" PDF tool?
Most PDFs you process at home contain something sensitive — bank statements, medical bills, school records, contracts, tax returns. Every cloud PDF service is a third-party data processor with its own breach risk. Browser-only tools eliminate the entire category of risk.
Explore more tools.
See every tool we ship.
83 browser-based tools across PDF, image, audio, developer, business, and security categories. All free for daily use; one-time license for unlimited.