Merge, split, compress, convert, edit, sign and protect PDF files with 400Tools — a free browser-based PDF editor and converter. No downloads, no watermarks and no account required to get started. Works on Windows, Mac, Linux, iPhone, iPad and Android.
400Tools is a free online toolkit with 60+ browser-based tools for working with PDFs, images and developer files. Combine several PDFs into one document, split a PDF into separate files, reduce PDF file size, convert PDF to Word, Excel, JPG or Markdown, add electronic signatures and passwords, and much more — all from one website, with no software to install.
Merge PDF files online for free. Combine multiple PDFs into one document in the order you choose — no software to install.
Split a PDF online into separate files. Extract a single page, a page range, or turn every page into its own PDF.
Reorder, delete and add PDF pages online. Drag pages into any sequence and save a perfectly organized document.
Rotate PDF pages online by 90°, 180° or 270°. Rotate a single page or an entire multi-page document at once.
Remove unwanted pages from a PDF online. Keep only the pages you need in a matter of seconds.
Extract specific pages from a PDF into a new document. Save a page range as a separate, ready-to-share file.
Add page numbers to a PDF online. Choose the position, number format, font and size to match your document.
Compress PDF files online and reduce file size while keeping the quality clear and readable — ideal for email and uploads.
Repair a damaged or corrupt PDF online and recover as much content as possible from broken files.
Make scanned PDFs searchable with OCR online. Extract selectable, searchable text from image-only documents.
Convert a PDF to PDF/A online for long-term digital archiving. Preserve the layout while preparing documents for storage.
Convert PDF to Word (DOC/DOCX) online for free. Get an editable document with text, tables and layout intact.
Convert Word documents to PDF online. Turn DOC and DOCX files into shareable, print-ready PDFs.
Convert PDF to PowerPoint (PPT/PPTX) online. Turn each PDF page into an editable presentation slide.
Convert PowerPoint to PDF online. Turn PPT and PPTX presentations into universal files anyone can open.
Extract tables and data from a PDF into an Excel (XLS/XLSX) spreadsheet online in a few short seconds.
Convert Excel spreadsheets to PDF online. Preserve tables, charts and formatting from XLS and XLSX files.
Convert PDF pages to JPG images online. Download each page as a high-quality JPEG or extract embedded images.
Convert JPG images to PDF online for free. Combine photos and scans into one PDF with adjustable orientation and margins.
Convert a web page (HTML) to PDF online. Enter any URL and save the page as a PDF document.
NewConvert PDF to Markdown online. Extract text, headings, lists and links as clean .md files — ready for AI pipelines and LLMs.
Edit PDF files online free. Add text, images, shapes and annotations, then change the font, size and color of your content.
Sign a PDF online or request signatures from others. Add electronic signatures to contracts and forms in minutes.
Add a watermark to PDF documents online. Stamp text or an image with custom opacity, rotation and position.
Crop PDF margins online. Trim page edges or select a custom area, then apply it to one page or the whole document.
Redact sensitive information in a PDF online. Permanently black out text and graphics before you share a document.
NewFill and create PDF forms online. Add text fields, checkboxes, dropdowns and signature fields to any PDF document.
Remove a password from a PDF online that you own. Unlock protected files so you can edit, print or share them freely.
Protect a PDF with a password online. Encrypt documents to prevent unauthorized access, copying and editing.
NewSummarize PDFs with AI online. Get the key points from research papers, reports and articles in seconds.
NewTranslate PDF files online with AI. Keep fonts, layout and formatting intact while translating to dozens of languages.
Compare two PDF versions online and spot differences in text and content between revisions instantly.
NewCompress JPG, PNG and WebP images online. Reduce file size right in your browser while keeping great quality.
NewResize images online by pixels or percentage. Batch resize multiple photos with aspect ratio lock.
NewCrop images online with drag-and-drop precision and aspect ratio presets like 1:1, 4:3 and 16:9.
NewConvert images to Base64 strings or data URIs online — perfect for embedding images in HTML, CSS and JavaScript.
NewDecode Base64 strings and data URIs back into images online. Preview the result and download it instantly.
NewConvert JPG, PNG and other images into scalable SVG vectors online — with adjustable colors and detail.
NewConvert SVG files to high-quality PNG images online. Custom size with transparency preserved.
NewConvert iPhone HEIC and HEIF photos to universally compatible JPG files online, one at a time or in batches.
NewConvert PNG images to compact JPG files online. Batch convert with adjustable quality to shrink file sizes.
NewConvert WebP images to universally supported PNG files online. Transparency and quality are preserved.
NewMake animated GIFs online from a set of images. Reorder frames, set the speed and size, then download free.
NewRemove image backgrounds online with AI. Get clean, transparent PNG cutouts automatically in one click.
NewPick colors from any image online. Get HEX, RGB and HSL values plus the dominant color palette of a photo.
NewCreate favicons from any image online. Download favicon.ico, Apple touch icons and every standard PNG size at once.
NewMake memes online free. Add top and bottom text to any image, customize fonts and colors, download as PNG.
NewCreate QR codes online for URLs, text, WiFi and more. Custom size, colors and error correction — download PNG or SVG.
NewScan QR codes from images online. Upload a photo or screenshot and instantly decode its contents.
NewGenerate barcodes online — Code 128, EAN-13, UPC-A and more. Custom size and colors, download PNG or SVG.
NewCreate a WiFi QR code so guests connect to your network with one scan. Works with WPA, WEP and open networks.
NewFormat, validate and minify JSON online. Pretty-print with custom indentation, sort keys and catch errors.
NewConvert JSON to CSV online. Turn arrays of objects into clean spreadsheet rows with custom delimiters.
NewConvert CSV to JSON online. Auto-detects delimiters and headers to produce structured objects or arrays.
NewConvert XML to JSON online. Attributes, repeated elements and nested text nodes are handled automatically.
NewEncode and decode Base64 online for text and files, with standard and URL-safe alphabets.
NewEncode and decode URLs online. Percent-encode query strings, path segments and URL parameters.
NewGenerate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes online from text or files.
NewGenerate random UUID v1 and v4 identifiers online — up to 1000 unique IDs at once.
NewTest JavaScript regular expressions online with live matches, flags and capture groups as you type.
NewMinify HTML online. Strip comments, collapse whitespace and save bytes without leaving your browser.
NewMinify CSS online. Remove comments, shorten hex colors and reduce stylesheet size instantly.
NewMinify JavaScript online with a string-aware scanner that preserves code semantics and behavior.
NewFormat SQL online and pretty-print queries with uppercase keywords and clean, readable indentation.
NewConvert Markdown to HTML online. Headings, lists, tables, code blocks and links with a live preview — nothing is uploaded.
NewConvert YAML to JSON online. Nested maps, lists, inline arrays and block strings — pretty-printed output, nothing is uploaded.
NewCount words, characters, sentences and paragraphs instantly. Includes reading time, speaking time, unique words and a top-words breakdown.
NewCount characters with and without spaces, letters, digits, symbols and lines. Includes limit presets for tweets and SMS.
NewConvert text case online — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more. Instant and private.
NewReverse text online — characters, words, lines or sentences with instant live preview. Free and private.
NewCreate SEO-friendly URL slugs from any title. Choose separator, strip stop words and cap the length — instant and private.
NewGenerate SEO meta tags, Open Graph and Twitter Card HTML in seconds. Copy ready-to-paste code for your page head.
NewCheck text against reference documents with sentence-level similarity analysis. Get an originality score — nothing is uploaded.
NewFind spelling mistakes, grammar errors, punctuation problems and wordy phrases with one-tap fixes — checks run in your browser.
NewRewrite text in simple, formal or casual wording, or shorten it. Shuffle for different synonym variations instantly.
NewShorten any article to a paragraph, bullet points or key phrases with adjustable length and focus keywords — nothing is uploaded.
NewAnalyze keyword density in any text — single words and 2–3 word phrases with live percentages and a focus-keyword health check.
NewCreate a valid XML sitemap for Google and Bing from your page list. Set change frequency, priority and lastmod, then download.
NewBuild a robots.txt file with allow and disallow rules per user-agent, sitemap link and crawl delay. Copy or download instantly.
NewCompress MP4, WebM and MOV files online — pick quality, shrink resolution and trim. Runs in your browser, nothing is uploaded.
NewConvert video clips into animated GIFs — choose FPS, width and quality, trim the clip. Free and private in your browser.
NewConvert MP3, WAV, OGG, M4A and FLAC files to MP3 or WAV — pick bitrate, sample rate and mono/stereo. Nothing is uploaded.
Chain your favorite tools together, automate repetitive document tasks and save the results anywhere.
Coming soonWith Premium, batch-edit and manage documents locally on your desktop — no internet required and no file limits.
↗Every tool works in mobile browsers on iPhone, iPad and Android. Edit, convert and sign PDFs wherever you are.
↗Standardize document tasks for your team, automate repeat work with custom workflows and scale with flexible plans.
↗Get the same speed and simplicity you expect from 400Tools, built specifically for images. Compress, resize, enhance and edit photos with AI — right in your browser.
400Tools is an all-in-one web app for working with PDFs, images and developer files. Most tools process your documents directly in the browser, nothing you create is watermarked, and you can start working without creating an account.