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Image converter

Convert one or more images to a practical raster, document, icon, or web format directly in your browser.

Files process locally
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Reviewed 2026-07-10

Free Image Converter – how it works

The Image Converter decodes each source into pixels and creates a new file in the format you choose. It can handle everyday formats such as JPEG, PNG, WebP, GIF, BMP, and TIFF, plus HEIC and AVIF through browser-side codecs.

Processing happens locally in the browser; the image files are not uploaded for conversion. Because decoded pixels and output buffers use device memory, very large photos, many simultaneous files, or codec-heavy formats can exceed the memory available to a browser tab.

Supported formats

  • JPEG
  • PNG
  • WebP
  • AVIF
  • GIF
  • BMP
  • TIFF
  • HEIC/HEIF (input only)
  • SVG
  • PDF (output only)
  • ICO
  • TGA (output only)
  • PPM/PGM/PBM (output only)
  • JPEG 2000 (browser-dependent input)

How to use Image Converter online

  1. Add your images. Drop files into the converter or choose them from your device. Unsupported or browser-dependent inputs are reported per file.
  2. Choose an output. Select the target format and, for lossy outputs, set a quality level appropriate for the image.
  3. Convert and inspect. Run the conversion, open a representative result to check colour and detail, then download individual files or all completed results.

When to use it

  • Create broadly compatible JPEG copies of HEIC photos.
  • Prepare WebP or AVIF assets for a website while keeping the original dimensions.
  • Turn a raster image into a single-page PDF or a PNG-backed SVG wrapper.

Known limitations

  • Conversion rasterizes the source. SVG output contains an embedded raster image, and GIF output is a single static frame rather than an animation.
  • JPEG 2000 decoding depends on browser support; camera RAW, PSD, EPS, AI, and similar project formats are not decoded.
  • A quality setting is encoder-specific and does not guarantee a target file size. Complex or already optimized images can become larger.

Frequently asked questions

Does conversion change the image dimensions?

Normally no. The converter preserves the decoded pixel width and height, except ICO output is reduced when necessary to fit its 256-pixel maximum dimension.

Will transparency survive?

Only when the selected output supports it. PNG, WebP, AVIF, GIF, TIFF, and the raster image embedded in SVG can represent transparency; JPEG and PDF conversion do not preserve an alpha channel.

Are my files sent to a server?

No. Decoding and encoding run in the current browser tab. Normal website hosting and analytics traffic may still occur, but the conversion path does not upload the image files.

AVIF vs PNG — which should I use?

Use AVIF for web images where file size matters and browser compatibility is modern (Chrome, Firefox, Safari 16+). AVIF achieves 50–70% smaller files than PNG at similar visual quality. Use PNG when you need perfect lossless reproduction, wide software compatibility, or transparency support in older tools. For photographs on a website, AVIF or WebP are better choices; for icons, logos, or images that need to open in any application, PNG is safer.

AVIF vs WebP — what is the difference?

AVIF generally produces smaller files than WebP at the same visual quality, especially for complex photographs. WebP has slightly broader compatibility (supported since 2020 in all major browsers). Both support transparency and animation. Use AVIF for maximum compression; use WebP for better compatibility with slightly older browser versions.

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