Image, video, audio & PDF tools

Which tool for which job

• Open an iPhone photo on Windows, or in a form that rejects HEICThe Image Converter turns HEIC and HEIF into JPG or PNG, and converts freely between PNG, JPG and WebP. Drop in many files at once.
• Get a photo under an upload limitThe Image Compressor re-saves it as JPG or WebP with a quality slider and an optional maximum width, and shows how much smaller each file became.
• Resize to exact pixel dimensions, or build an icon setThe Image Resizer exports every size you tick for every image you drop in, with Fit, Fill and Stretch modes. For a real multi-size favicon.ico, use the image converter's ICO output instead.
• Crop a profile picture or cut out a backgroundThe Image Cropper makes square or circular crops and can remove the background with an AI model that runs on your device.
• Strip the location out of a photo before sharing itThe EXIF Viewer & Remover shows what a photo reveals — camera, date, GPS coordinates — and downloads a clean copy rebuilt from the pixels alone.
• Turn an SVG logo into a PNGSVG to PNG renders vector artwork at any pixel size, so every export is sharp.
• Embed a small image directly in HTML or CSSImage to Base64 produces the data URI, a ready-made <img> tag or a CSS rule.
• Convert a colour between HEX, RGB and HSLThe Color Converter shows all three at once, formatted the way CSS expects.
• Sign, edit, merge or split a PDFThe PDF Editor edits text that is already on the page, adds text, signatures, highlights and drawings, reorders and rotates pages, merges and splits files, and can read scanned pages with OCR.
• Convert a video, or pull the audio out of oneThe Video Converter writes MP4, WebM or GIF, or extracts the soundtrack as MP3, M4A or WAV.
• Cut clips together with titles and effectsThe Video Editor is a full timeline editor with text, shapes, animations, filters and sound effects, exporting MP4 or WebM.
• Convert audio to MP3 or WAVThe Audio Converter reads M4A, OGG, FLAC, WAV and more, in batches.
• Make a karaoke track or isolate a vocalThe Vocal Remover splits a song into vocals, instrumental, drums, bass and other.

Limits worth knowing

• Your device does the work. Files are held in memory while they are processed, so very large videos (roughly 1–2 GB and up), multi-hour recordings and long songs can be slow or fail outright — especially on a phone. Use a desktop browser for the big jobs.
• Three tools download an engine on first use, then keep it cached: the video converter (about 31 MB), the vocal remover (about 172 MB) and the image cropper's background removal (tens of megabytes). Only the engine is downloaded — your file still never leaves your device.
• JPG has no transparency. Transparent areas are flattened onto a solid background when you save as JPG. Keep PNG or WebP when transparency matters.
• Animated GIFs become a still of their first frame in the image tools.
• White-out in the PDF editor hides text; it does not delete it. The words underneath can still be selected and searched. To remove something for good, use the editor's Flatten pages to images option. Password-protected PDFs cannot be opened.
• Exporting from the video editor relies on the browser's built-in video encoder. Chrome or Edge on a desktop is the dependable choice.

How these tools work

Most of the image tools are built on the browser's Canvas API: the image is decoded, redrawn at the size or crop you asked for, and re-encoded. Formats a browser cannot handle on its own are covered by open-source software compiled to WebAssembly — libheif for iPhone HEIC photos, FFmpeg for video, and Meta's Demucs model for separating a song into stems. The PDF editor pairs Mozilla's pdf.js, which reads and draws pages, with pdf-lib, which writes the edited file. You can check all of this yourself: open your browser's developer tools, watch the Network tab while you convert something, and you will see an engine being fetched but never your file being sent.

Guides: PNG, JPG, WebP or HEIC? How to choose an image format · How to compress images for the web without losing quality · What your photos reveal: EXIF data, GPS and how to remove them · MP4, WebM or GIF? Picking the right video format · How to extract audio from a video (and which format to pick) · How AI vocal removers actually work · Why Toolkit runs entirely in your browser (and why that matters)

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