# PDF Tools Ai > Free, private, 100% in-browser PDF utilities powered by WebAssembly. Process, compress, convert, sign, merge, and edit PDFs locally in device memory with zero server uploads, zero watermarks, and complete client-side data privacy. PDF Tools Ai is a privacy-first web application designed for processing PDF documents entirely within the user's browser. Unlike traditional online PDF tools that upload sensitive files to remote cloud servers, PDF Tools Ai executes all rendering, parsing, encryption, compression, and rasterization using client-side WebAssembly (Wasm) and HTML5 Canvas APIs. Exactly zero bytes of document data leave the user's device. ## Core Features & Privacy Architecture - **100% Client-Side WebAssembly (Wasm)**: All operations run in local device memory conforming to ISO 32000-1 and ISO 32000-2 specifications. - **Zero Server File Uploads**: Auditable via browser Network DevTools (0 bytes egress during file execution). - **Zero Watermarks & Unlimited Processing**: No subscriptions, no registration, no file size caps, and no promotional stamps. - **Offline Capable**: Functions in modern web browsers (Chrome, Firefox, Safari, Edge) without requiring persistent server connectivity. - **AES-256 Cryptographic Security**: Conforms to NIST FIPS 197 standards for encryption and password removal. ## Core PDF Tools - [Compress PDF](https://pdftoolsai.com/compress-pdf/): Dynamically compress PDF files with custom compression sliders and live size previews. - [Merge PDF](https://pdftoolsai.com/merge-pdf/): Combine multiple PDF documents, rearrange page sequences, and organize binder files. - [Split PDF](https://pdftoolsai.com/split-pdf/): Split PDF files into individual pages or extract custom page ranges. - [PDF to Word](https://pdftoolsai.com/pdf-to-word/): Convert PDF documents into editable Microsoft Word (.docx) files. - [Word to PDF](https://pdftoolsai.com/word-to-pdf/): Convert Microsoft Word (.docx) documents into standard PDFs. - [PDF Editor](https://pdftoolsai.com/pdf-editor/): Add text, draw annotations, insert shapes, and fill PDF forms locally. - [Sign PDF](https://pdftoolsai.com/sign-pdf/): Draw, type, or stamp legal digital signatures onto contracts and agreements. - [Protect PDF](https://pdftoolsai.com/protect-pdf/): Encrypt PDF files with standard AES-256 user and owner passwords. - [Remove PDF Password](https://pdftoolsai.com/remove-pdf-password/): Decrypt and remove restrictions from password-protected PDFs you own. ## Exact Target Size Compressors Target specific file size limits for job portals, government applications, and visa uploads: - [Compress PDF to 20KB](https://pdftoolsai.com/compress-pdf-to-20kb/): Target strict 20 KB portal upload limits. - [Compress PDF to 50KB](https://pdftoolsai.com/compress-pdf-to-50kb/): Reduce PDF size to exactly 50 KB. - [Compress PDF to 100KB](https://pdftoolsai.com/compress-pdf-to-100kb/): Optimize documents to under 100 KB. - [Compress PDF to 150KB](https://pdftoolsai.com/compress-pdf-to-150kb/): Reduce document size below 150 KB. - [Compress PDF to 200KB](https://pdftoolsai.com/compress-pdf-to-200kb/): Hit strict 200 KB employment & exam limits. - [Compress PDF to 250KB](https://pdftoolsai.com/compress-pdf-to-250kb/): Target 250 KB application ceilings. - [Compress PDF to 300KB](https://pdftoolsai.com/compress-pdf-to-300kb/): Compress PDFs under 300 KB. - [Compress PDF to 400KB](https://pdftoolsai.com/compress-pdf-to-400kb/): Compress PDFs under 400 KB. - [Compress PDF to 500KB](https://pdftoolsai.com/compress-pdf-to-500kb/): Downsize multi-page files under 500 KB. - [Compress PDF to 1MB](https://pdftoolsai.com/compress-pdf-to-1mb/): Optimize documents to under 1 megabyte. - [Compress PDF to 2MB](https://pdftoolsai.com/compress-pdf-to-2mb/): Downsize large attachments below 2 megabytes. - [Compress PDF to 5MB](https://pdftoolsai.com/compress-pdf-to-5mb/): Reduce high-resolution scans below 5 megabytes. - [Increase PDF Size](https://pdftoolsai.com/increase-pdf-size/): Upsize PDF bytes to meet minimum portal upload requirements. ## Ecommerce & Thermal Label Utilities - [Meesho Label Cropper](https://pdftoolsai.com/meesho-label-cropper/): Crop Meesho multi-order shipping manifests into 4x6 thermal printer format. - [Flipkart Label Cropper](https://pdftoolsai.com/flipkart-label-cropper/): Separate Flipkart marketplace shipping tags and invoice slips for thermal printing. - [Crop PDF](https://pdftoolsai.com/crop-pdf/): Trim margins, crop borders, and remove white spaces across all pages. - [Crop Image from PDF](https://pdftoolsai.com/crop-image-from-pdf/): Extract embedded high-resolution graphics and images from PDF pages. - [Multiple Pages per Sheet](https://pdftoolsai.com/multiple-pages-per-sheet/): Print 2, 4, or more pages per sheet (N-Up imposition) to reduce paper waste. ## Document Converters - [PDF to JPG](https://pdftoolsai.com/pdf-to-jpg/): Convert PDF pages to high-resolution JPEG images. - [PDF to Excel](https://pdftoolsai.com/pdf-to-excel/): Extract tabular data from PDF into spreadsheet format (.xlsx). - [Excel to PDF](https://pdftoolsai.com/excel-to-pdf/): Convert Excel spreadsheets (.xlsx, .xls) into PDF. - [PPT to PDF](https://pdftoolsai.com/ppt-to-pdf/): Convert Microsoft PowerPoint presentations (.pptx) to PDF. - [PPT Viewer](https://pdftoolsai.com/ppt-viewer/): View PowerPoint slide decks directly in the browser. - [PDF to EPUB](https://pdftoolsai.com/pdf-to-epub/): Convert PDF e-books to EPUB reading format. - [EPUB to PDF](https://pdftoolsai.com/epub-to-pdf/): Convert EPUB electronic books to printable PDF documents. ## Page Management & Analysis - [Extract Pages from PDF](https://pdftoolsai.com/extract-pages-from-pdf/): Select and save specific page ranges as a new document. - [Remove PDF Page](https://pdftoolsai.com/remove-pdf-page/): Delete unwanted, blank, or duplicate pages from PDFs. - [Rotate PDF](https://pdftoolsai.com/rotate-pdf/): Rotate PDF pages 90, 180, or 270 degrees permanently. - [PDF Contrast Editor](https://pdftoolsai.com/pdf-contrast-editor/): Darken faded text, enhance contrast, and clean up scanned documents. - [Add Image to PDF](https://pdftoolsai.com/add-image-to-pdf/): Place PNG, JPG, or SVG images and stamps anywhere on PDF pages. - [Count Words in PDF](https://pdftoolsai.com/count-words-in-pdf/): Calculate real-time word count, character count, and reading duration. ## Institutional & Legal Links - [About Us](https://pdftoolsai.com/about-us/): Architectural standards, engineering methodology, and privacy principles. - [Privacy Policy](https://pdftoolsai.com/privacy-policy/): Technical data minimization, zero network transmission policy, and GDPR/HIPAA alignment. - [Terms and Conditions](https://pdftoolsai.com/terms-and-conditions/): Service terms for client-side tool usage. - [Contact Us](https://pdftoolsai.com/contact-us/): Direct engineering support, bug reporting, and enterprise integration inquiries.