Fast, Private, In‑Browser PDF Tools
No sign-up. No uploads. Everything runs on your device for privacy.
Merge PDFs
Combine multiple PDFs into one instantly, in your browser.
Split PDF
Split PDFs by pages or ranges. Fast, private, local.
Rotate PDF
Rotate pages and save without quality loss.
Add Watermark
Add text watermark to your PDF locally.
Compress PDF
Reduce PDF size with adjustable quality, all in the browser.
PDF to PowerPoint
Convert PDF to editable PPTX in your browser.
PDF to JPG
Convert each PDF page to JPG or extract images.
JPG to PDF
Convert JPG images to a PDF with custom margins.
Crop PDF
Trim PDF page margins in your browser.
Add Page Numbers
Insert page numbers into PDFs with custom position.
Unlock PDF
Remove open-password from a PDF (requires correct password).
Extract Pages
Select pages/ranges and save to a new PDF.
File to PDF
Convert documents, spreadsheets, slides, images to PDF.
Email to PDF
Convert .eml/.html emails to PDF locally.
HTML to PDF
Convert HTML files or content to PDF with full rendering.
Image to PDF
Convert images to PDF with fit options and color controls.
Markdown to PDF
Convert Markdown to PDF with beautiful themes.
PDF to CSV
Extract table data from PDF to CSV format.
PDF to HTML
Convert PDF text content to HTML format.
PDF to Image
Convert PDF pages to high-quality images (PNG/JPEG).
PDF to Markdown
Convert PDF text to Markdown with structure detection.
PDF to PDF/A
Convert PDF to archival PDF/A format for long-term storage.
PDF to RTF
Convert PDF to Rich Text Format for word processors.
PDF to Word
Convert PDF to editable Microsoft Word (.docx) format.
PDF to XML
Convert PDF content to structured XML for data processing.
Add Password to PDF
Protect PDF with password encryption and permissions.
Add Stamp to PDF
Add text or image stamps to PDF documents.
Auto Redact PDF
Automatically detect and redact sensitive information.
Change PDF Permissions
Modify document access controls and permissions.
Manual Redact PDF
Manually select and redact specific areas in PDF.
Remove Certificate
Remove digital certificates and signatures from PDF.
Remove Password
Remove password protection from PDF documents.
Sanitize PDF
Remove harmful content and sensitive metadata.
Sign PDF
Add custom drawn signatures to PDF documents.
Sign with Certificate
Digitally sign PDF using X.509 certificates.
Validate Signatures
Verify authenticity of digitally signed PDFs.
PowerPoint to PDF
Convert PowerPoint presentations to PDF format.
Get Info on PDF
Extract detailed information and metadata from PDF documents.
Adjust Colors/Contrast
Enhance PDF appearance with color, brightness, and contrast adjustments.
Auto Rename PDF File
Generate meaningful file names based on PDF content and metadata.
PDF Auto Split by Size/Count
Automatically split PDF into smaller parts by file size or page count.
Repair PDF
Fix corrupted or damaged PDF files by rebuilding document structure.
Overlay PDFs
Overlay one PDF on another with transparency and positioning control.
Show JavaScript
Detect and analyze JavaScript code embedded in PDF documents.
Add Attachments
Embed files as attachments within PDF documents.
Add Image
Insert images into specific pages of PDF documents.
Change Metadata
View and modify PDF document metadata and properties.
Extract Images
Extract and download all images embedded in PDF documents.
Remove Blank Pages
Automatically detect and remove empty pages from PDFs.
Compare PDFs
Compare two PDF documents for differences in content and structure.
Flatten PDF
Remove interactive elements and flatten PDF content for final documents.
Remove Annotations
Remove comments, highlights, stamps, and annotations from PDFs.
Replace/Invert Colors
Invert colors or replace specific colors for accessibility.
OCR / Cleanup Scans
Make scanned PDFs searchable with real OCR, free and private.
PDF to Text
Extract plain text from a PDF, free and private.
Text to PDF
Convert plain text or a .txt file into a PDF.
Delete Pages from PDF
Remove specific pages from a PDF and keep the rest.
Compress PDF to Size
Shrink a PDF down to a target file size, like 100 KB.
The Free, Private PDF Toolkit
SonuPDF gives you more than 50 professional PDF tools that run entirely inside your web browser — no software to install, no account to create, and no file that ever leaves your device. Merge, split, compress, convert, sign, and edit PDFs in seconds, whether you're on a laptop, tablet, or phone. Because every tool processes your files locally using your browser's own engine, your documents stay completely private: nothing is uploaded to a server, so there's nothing to leak, lose, or store. SonuPDF is free to use for as long as you need it, with no watermarks, no page limits, and no hidden subscription.
How It Works
Pick the PDF tool you need from over 50 options — merge, split, compress, convert, sign, and more.
Drop in your file or select it from your device. Nothing uploads to a server; everything happens right in your browser.
Adjust the settings if needed, then click the action button to process your file instantly.
Download your finished PDF right away. No email, no waiting, no sign-up required.
Why Choose SonuPDF?
100% Private by Design
Every file is processed locally in your browser. Your documents are never uploaded, stored, or seen by anyone but you.
Completely Free
All 50+ tools are free to use, with no page limits, no watermarks, and no subscription required.
No Installation Needed
Works instantly in any modern browser — Chrome, Safari, Firefox, or Edge. Nothing to download or install.
Works on Any Device
Use SonuPDF on your laptop, tablet, or phone. The interface adapts to your screen automatically.
Fast, Local Processing
Because your files never leave your device, there is no upload wait — most tools finish in seconds.
50+ PDF Tools in One Place
From merging and splitting to converting, compressing, redacting, and signing — everything you need is here.
Frequently Asked Questions
Yes. Every tool on SonuPDF is completely free, with no hidden fees, subscriptions, or watermarks. You can use it as often as you like.
Yes. SonuPDF processes your files entirely inside your browser using local JavaScript — your documents are never uploaded to a server, so no one else can access them.
No account or sign-up is required. Just open the tool you need and start working with your PDF right away.
No. SonuPDF works entirely in your web browser on any modern device — no downloads or installations needed.
Since processing happens locally on your own device, limits depend on your browser and computer's available memory rather than a fixed server-side cap, so most everyday PDFs work without issue.
Yes. SonuPDF's tools are fully responsive and work on mobile browsers, tablets, laptops, and desktops.