About convert2image

convert2image is a small collection of image converters and tools built around one idea: changing a file's format should not require sending it to someone else's computer.

Why it exists

Converting an image is one of the most common small jobs people do online. Most of the sites that offer it upload your file to a server, process it there, and ask you to trust that it is deleted afterwards. For a meme, that is fine. For photos of your children, a scan of your passport, a signed contract or a medical letter, it is a lot to ask.

Modern browsers are perfectly capable of doing the work themselves. So every tool on this site reads your file in the browser, converts or edits it there, and hands the result straight back to you. There is no upload, no queue, no daily limit and no account.

How it is built

The site is plain HTML, one stylesheet and one script. Most conversions use only what your browser already provides: it decodes the image, draws it onto a canvas, and encodes it in the new format. Some formats need extra help, and for those the page loads a well-established open-source library the first time you use it:

• PDF.js from Mozilla, to render PDF pages.
• heic2any, built on libheif, to read iPhone HEIC photos.
• UTIF.js and UPNG.js, to read TIFF and write compact PNG files.
• libavif and libwebp via the jSquash project, to write AVIF, and WebP in Safari.
• jsPDF, JSZip, gifenc, exifr and ImageTracer for PDFs, zip downloads, GIFs, metadata and SVG tracing.

Those libraries are downloaded as code and run on your device. Your images are never sent to them or to anyone else.

The writing

Each tool page tries to explain what the conversion actually does, what it keeps and what it loses, because most confusion about images comes from not knowing that. The blog goes further into the questions behind the tools: why files are the size they are, what DPI really means, and what your photos reveal about you.

A sister site

If you like tools that show their working, StatGarden is a companion project: a library of calculators, each with the formula, worked examples and notes on the mistakes people commonly make.