Convert Every File Free.
Directly in Your Web Browser.
ConvertStuff is a 100% free online conversion suite that processes images, PDFs, videos, and text entirely on your device. Powered by WebAssembly, your confidential files never touch external cloud servers.
Drop your files here png
or drag and drop files from your computer
- 100% Free
- No Sign-Up Required
- Files Never Leave Your Device
Zero Server Uploads
All files are transformed in browser memory. No files are ever saved, tracked, or sent to cloud servers.
Instant WebAssembly Speed
Runs locally on your device CPU for near-instant rendering without uploading wait times.
100% Free Forever
No registration, no subscriptions, no daily conversion caps, and zero watermarks on any file.
How ConvertStuff Works
Three steps from file to finished download, with every step running on your own device.
- 1
Select Files or Paste Text
Drag and drop your files into the dropzone or choose from over 40+ free converter tools.
- 2
Instant Local Conversion
Click Convert to transform your files locally in milliseconds using your device hardware.
- 3
Download Result
Save your converted file instantly or download everything as an organized .ZIP archive.
Explore All Free Online Tools
100% free with no file size limits, no watermarks, and zero server uploads. Search or filter by format below.
Free Fancy Font Generator
Convert plain text into Bold, Gothic, and Cursive Unicode fonts for bios.
Free Hashtag Formatter
Format clean, accessible hashtags for Instagram and TikTok.
Free Tweet Thread Counter
Draft and split multi-tweet threads within 280 character limits.
Free Universal Unit Converter
Convert length, weight, temperature, speed, area, and volume accurately.
Free Time & World Clock Converter
Convert time duration units and compare global city timezones in real time.
Free PX to REM CSS Converter
Convert pixel values to responsive CSS rem units instantly.
Free Data Storage Converter
Convert Bytes, KB, MB, GB, and TB with precision.
Free Discount & Sales Calculator
Calculate final discounted prices and savings in seconds.
Free Color Format Converter
Convert HEX color codes to CSS RGB and HSL values.
Free Password Generator
Generate strong, cryptographically secure passwords with entropy meter.
Free SHA-256 Hash Generator
Calculate SHA-256, SHA-512, and SHA-1 cryptographic hashes.
Free UUID / GUID v4 Maker
Generate bulk random UUID v4 database identifiers.
Free Base64 Encoder / Decoder
Encode and decode Base64 strings safely in browser.
Free URL Percent Encoder
Percent-encode special URI characters for web query strings.
Free Online EPUB Reader
Open DRM-free EPUB books in your browser with day, sepia and night modes.
Free PDF to EPUB Converter
Turn the text of a PDF into a reflowable EPUB eBook with chapters.
Free EPUB to PDF Converter
Turn the text of an EPUB eBook into a printable PDF.
Free Word (DOCX) to EPUB
Turn Word manuscripts into EPUB eBooks, one chapter per Heading 1.
Free TXT to EPUB Maker
Package plain text notes and essays into clean EPUB publications.
Free Google SERP Previewer
Simulate Google search snippet results with pixel width checker.
Free Meta Tag Generator
Generate complete HTML, OpenGraph, and Twitter card meta tags.
Free OpenGraph Card Preview
Preview and validate social share image thumbnails for Facebook/Twitter.
Free Robots.txt Builder
Generate clean crawl rules and sitemap links for Googlebot & Bingbot.
Free Keyword Density Analyzer
Analyze keyword occurrences and percentage density in web copy.
Free Merge PDF - Combine Files
Combine multiple PDF files into one document with full page-order control.
Free Split PDF & Extract Pages
Split a PDF into single pages or extract a custom page range.
Free Rotate PDF Pages
Rotate PDF pages 90, 180, or 270 degrees and save it permanently.
Free Delete Pages From PDF
Remove unwanted or blank pages from a PDF and rebuild it cleanly.
Free PDF to JPG Converter
Extract PDF pages as high-resolution JPG images.
Free PDF to PNG Converter
Convert PDF pages into transparent, lossless PNG images.
Free PDF to WebP Converter
Convert PDF document pages to lightweight WebP.
Free PDF to Text Converter
Extract all unformatted text from PDF files.
Free PDF to Word (DOCX)
Convert PDF documents into editable Word files.
Free PDF to SVG Converter
Render each PDF page to a high-resolution SVG, one file per page.
Free PNG to PDF Converter
Combine multiple PNG images into a clean PDF document.
Free JPG to PDF Converter
Turn photos and scans into a shareable PDF document.
Free WebP to PDF Converter
Convert modern WebP images into universal PDF pages.
Free HEIC to PDF Converter
Convert Apple iPhone HEIC photos directly into PDF format.
Free SVG to PDF Converter
Turn SVG artwork into a print-ready PDF at high resolution.
Free TXT to PDF Converter
Convert plain text files into clean printable PDFs.
Free DOCX to PDF Converter
Convert Word documents to fixed-layout PDF format.
Free BMP to PDF Converter
Turn uncompressed bitmap images into PDF pages.
Free AVIF to PDF Converter
Convert next-generation AVIF images to PDF.
Free Image to Text (OCR) Converter
Extract text from images, receipts, screenshots, and scans in browser.
Free PNG to Text (OCR) Converter
Extract editable text from PNG images and screenshots with in-browser OCR.
Free JPG to Text (OCR) Converter
Extract text from JPG photos, receipts, and documents with OCR.
Free QR Code Generator
Create QR codes for URLs, WiFi, email, and SMS. Download PNG or vector SVG.
Free PNG to JPG Converter
Shrink PNG file size up to 70% by converting to JPG.
Free JPG to PNG Converter
Convert JPG photos to lossless PNG for crisp editing.
Free HEIC to JPG Converter
Convert iPhone HEIC photos to universal JPG format.
Free HEIC to PNG Converter
Transform iOS camera shots into transparent-ready PNG.
Free PNG to WebP Converter
Boost website speed with Google WebP compression.
Free JPG to WebP Converter
Slash image payloads by 30% for improved PageSpeed.
Free WebP to PNG Converter
Convert WebP assets back to standard PNG with alpha channel.
Free WebP to JPG Converter
Turn WebP files into universally viewable JPG images.
Free PNG to ICO Favicon Maker
Create 16x16, 32x32, and 48x48 browser favicon.ico icons.
Free JPG to ICO Converter
Generate desktop and browser icon files from standard JPGs.
Free SVG to PNG Converter
Render scalable vector graphics into crisp raster PNGs.
Free SVG to JPG Converter
Flatten SVG vectors into standard white-background JPGs.
Free AVIF to JPG Converter
Convert AV1 image format files to universally supported JPG.
Free AVIF to PNG Converter
Export AVIF files to uncompressed PNG format.
Free BMP to PNG Converter
Convert uncompressed BMP bitmaps to compact PNGs.
Free BMP to JPG Converter
Compress heavy BMP images into lightweight JPG format.
Free GIF to PNG Frame Extractor
Extract every frame of an animated GIF as numbered PNG files.
Free GIF to JPG Converter
Convert a GIF to a JPG photo, using the first frame of an animation.
Free JPG Image Compressor
Reduce JPG file weight up to 80% while retaining quality.
Free JPG Image Resizer
Resize JPG dimensions in pixels with locked aspect ratio.
Free JPG Image Cropper
Crop JPG images to 1:1 square, 16:9, or 4:3 ratios.
Free PNG Image Compressor
Shrink PNGs with palette reduction (up to 256 colours), keeping transparency.
Free PNG Image Resizer
Resize PNG width and height in pixels accurately.
Free PNG Image Cropper
Crop PNG graphics and icons cleanly.
Free WebP Image Compressor
Fine-tune WebP compression for maximum PageSpeed ranking.
Free WebP Image Resizer
Resize Google WebP images for web banners.
Free MP4 to MP3 Audio Extractor
Rip high-bitrate MP3 audio from any MP4 video in seconds.
Free MP4 to Animated GIF Maker
Turn video clips into shareable animated GIFs.
Free GIF to MP4 Video Converter
Convert looping animated GIFs to lightweight MP4 video.
Free WAV to MP3 Converter
Compress heavy studio WAV tracks into portable 320kbps MP3s.
Free MP3 to WAV Converter
Decompress MP3 audio into uncompressed PCM WAV waveforms.
Free MP4 to WAV Audio Extractor
Extract lossless uncompressed WAV audio from video files.
Free WebM to MP4 Video Converter
Convert browser WebM recordings to universal MP4 video.
Free WebM to MP3 Converter
Extract MP3 audio from WebM video clips.
Free MOV to MP4 Converter
Convert Apple QuickTime MOV videos to universal MP4 format.
Free MP3 to OGG Audio Converter
Convert MP3 songs into royalty-free OGG Vorbis audio.
Free Video to Text Transcriber
Transcribe spoken dialogue from MP4 and WebM videos with in-browser speech recognition.
Free Video Mute & Audio Remover
Remove sound tracks and background noise from video files in browser RAM.
Free Video Speed Controller
Speed up (1.5x, 2x) or slow down (0.5x) video playback and export.
Free MP3 Audio Cutter & Trimmer
Cut, trim, and make ringtones from MP3 tracks with waveform preview.
Free MP3 Audio Compressor
Reduce MP3 audio bitrate to shrink file size for attachments.
Free MP3 Speed & Duration Resizer
Change audio speed (0.5x to 2.0x) and boost volume gain.
Free WAV Audio Cutter
Trim uncompressed WAV recordings losslessly.
Free WAV Audio Compressor
Compress WAV tracks by optimizing sample rates and channels.
Free PDF Compressor
Shrink PDFs by re-compressing embedded images. Text stays selectable.
Free JPG Image Compressor
Reduce JPG file weight up to 80% while retaining quality.
Free PNG Image Compressor
Shrink PNGs with palette reduction (up to 256 colours), keeping transparency.
Free WebP Image Compressor
Fine-tune WebP compression for maximum PageSpeed ranking.
Free HEIC Photo Compressor
Turn iPhone HEIC photos into smaller JPEGs before sharing.
Free MP3 Audio Compressor
Reduce MP3 audio bitrate to shrink file size for attachments.
Free WAV Audio Compressor
Compress WAV tracks by optimizing sample rates and channels.
Free MP4 Video Compressor
Re-encode videos as smaller H.264 MP4 files in your browser.
Free CSS Code Minifier
Compress stylesheets to remove whitespace and speed up web pages.
Free JSON Formatter & Beautifier
Format, validate, and minify JSON with 2-space, 4-space, or tab indentation.
Free HTML Live Viewer & Editor
Preview and edit HTML, CSS, and JS in a live sandboxed browser frame.
Free HTML Beautifier & Formatter
Format, indent, and beautify messy or minified HTML markup.
Free JavaScript Viewer & Sandbox
Inspect, view, and run JS code with live console.log output terminal.
Free JavaScript Beautifier
Deobfuscate and format minified JavaScript with clean indentation.
Free JavaScript Minifier
Compress JS scripts and strip comments to reduce bundle sizes.
Free CSS Beautifier & Formatter
Format and indent minified CSS stylesheets cleanly.
Free CSS Minifier & Optimizer
Compress stylesheets to remove whitespace and boost Core Web Vitals.
Free XML & SVG Formatter
Beautify and indent XML sitemaps, RSS feeds, and SVG vectors.
Free SQL Query Formatter
Format SQL queries, capitalize keywords (SELECT, FROM, WHERE), and indent.
Free Markdown Previewer & Live Editor
Read Markdown as the finished document, rendered live as you type.
Free Markdown Formatter & Beautifier
Tidy messy Markdown: headings, list markers, numbering and table alignment.
Free Markdown to HTML Converter
Convert Markdown into semantic HTML with live side-by-side preview.
Free HTML to Markdown Converter
Convert raw HTML web code back into clean, readable Markdown.
Free HTML Entity Encoder
Safely encode special HTML characters to prevent XSS rendering issues.
Free Title Case Converter
Capitalize headlines in AP, APA, Chicago, and MLA style rules.
Free Sentence Case Converter
Convert all text to proper grammatical sentence case automatically.
Free UPPERCASE Text Converter
Transform any text or list into all capital UPPERCASE letters.
Free lowercase Text Converter
Convert all text and characters into clean, uniform lowercase letters.
Free URL Slug & Kebab Case Maker
Transform titles into clean, SEO-friendly URL slugs and variables.
Free Word & Character Counter
Count total words, characters, sentences, and estimated reading time.
Free Text Splitter & Chunker
Split long text and prompts into chunks for LLMs, RAG, and Twitter threads with overlap.
Free Text Chunker & Tokenizer
Chunk large documents into uniform segments with custom overlap margins.
Free Text Embedder & Card Maker
Create responsive embeddable quote cards, announcements, and HTML iframe widgets.
Free AI Text Improver & Enhancer
Enhance writing tone, fix passive voice, and improve readability scores client-side.
Free JSON Formatter & Validator
Beautify, validate, minify, and key-sort JSON with instant error messages.
Free YAML to JSON Converter
Convert YAML configs and Kubernetes manifests into formatted JSON.
Free JSON to YAML Converter
Convert JSON objects and APIs into clean, human-readable YAML.
Free XML to JSON Converter
Parse XML sitemaps, RSS feeds, and XML tags into JSON.
Free JSON to XML Converter
Serialize JSON data into standard structured XML documents.
Free JSON to TypeScript Converter
Generate clean TypeScript interfaces and type definitions from JSON payloads.
Free JSON to SQL Schema Converter
Generate SQL CREATE TABLE schemas and INSERT INTO statements from JSON.
Free SQL to JSON Converter
Parse SQL INSERT statements and rows into JSON records.
Free cURL to Fetch & Python Converter
Transform cURL commands into JavaScript fetch, Python requests, and Axios.
Free JWT Token Inspector & Decoder
Decode JSON Web Token headers, claims, and timestamps 100% locally in browser.
Free Base64 to PDF Converter
Decode Base64 strings into downloadable PDF documents in browser memory.
Free PDF to Base64 Converter
Encode PDF documents into clean Base64 data strings for embed storage.
Free CSV to Excel XLSX Converter
Bundle CSV spreadsheets into native Microsoft Excel (.xlsx) workbooks.
Free Excel XLSX to CSV Converter
Export Microsoft Excel sheets into clean comma-separated CSV tables.
Free JSON to CSV Converter
Convert JSON APIs and objects into spreadsheets and CSV tables.
Free CSV to JSON Converter
Parse CSV spreadsheets and tabular data into JSON structures.
Free PNG to Base64 Converter
Encode PNG image files into data:image/png;base64 strings.
Free SVG to Base64 Encoder
Convert SVG code into URI-encoded data strings for inline styling.
Free JPG to Base64 Converter
Convert JPG images to Base64 strings.
Free M4A to MP3 Converter
Convert iPhone voice memos and Apple M4A audio to universal MP3 in browser.
Free FLAC to MP3 Converter
Compress lossless FLAC studio masters into high-quality MP3 tracks.
Free OGG to MP3 Converter
Convert Ogg Vorbis and Discord audio clips into universal MP3.
Free AAC to MP3 Converter
Convert AAC streams into standard MP3 audio files.
Free SRT to WebVTT Converter
Convert SubRip (.srt) subtitles to HTML5 WebVTT (.vtt) caption tracks.
Free WebVTT to SRT Converter
Convert WebVTT closed captions into standard SRT subtitle format.
Free Subtitle Transcript Extractor
Strip timecodes from subtitles to extract clean, readable text transcripts.
Free Markdown to PDF Converter
Render Markdown notes and README files into print-ready PDF documents.
Free Online ZIP Extractor & Reader
Unpack and view .zip archives directly in your browser without software.
Free Files to ZIP Creator
Bundle multiple files and documents into a compressed .zip download.
Free AI Writing Detector
Detect ChatGPT, Claude, and Gemini text with burstiness and lexical diversity analytics.
Free AI Text Humanizer
Transform robotic AI drafts into natural, human-sounding prose with zero cliché buzzwords.
Free Word Spinner & Article Rewriter
Rewrite articles and paragraphs with contextual synonyms and adjustable spin levels.
Free AI Grammar & Redundancy Fixer
Clean passive voice padding, normalize punctuation spacing, and tighten prose.
Free Watermark Remover & Canvas Inpainter
Erase unwanted watermarks, date stamps, and logos directly in browser RAM.
What Makes ConvertStuff Different from Cloud Converters?
Traditional online file converters force you to upload sensitive documents to remote third-party servers, creating data privacy risks and download delays. ConvertStuff executes 100% of the conversion algorithms directly in your browser using WebAssembly. This means instant conversions, zero upload bandwidth, and absolute data privacy.
ConvertStuff vs Traditional Cloud Converters
| Feature / Standard | ConvertStuff.online | Typical Cloud Converters |
|---|---|---|
| Data Privacy | 100% Local (Zero Server Uploads) | Stored on remote third-party servers |
| Pricing & Limits | $0.00 / Unlimited conversions | Daily caps, paid subscriptions ($10–$25/mo) |
| Conversion Speed | Instant (Runs on local hardware) | Queued behind server wait lines |
| Registration Required | No sign-up or email needed | Often requires account creation |
Who Uses ConvertStuff
The same private, browser-based engine covers very different jobs.
Business & Admin
Merge contracts, compress PDF invoices below email attachment limits, and convert scans into shareable documents without a compliance review.
Web & Development
Convert images to WebP and AVIF for Core Web Vitals, format JSON payloads, minify CSS, and generate favicons from a single source file.
Students & Educators
Turn lecture PDFs into text, pull single chapters out of long readers, and reformat essay titles into correct AP or APA title case.
Creators & Social
Resize and crop images for every platform, pull MP3 audio out of video, build QR codes for a bio link, and clean up hashtag blocks.
Frequently Asked Questions
Answers on privacy, formats, limits, and how browser-based conversion actually works.
Start Converting Files for Free Today
Over 100 free tools for PDF, image, audio, video, code, and text — all running privately inside your browser.
Explore All Free ToolsNo sign-up • No watermarks • Files never leave your device