PNG vs JPG vs WebP vs AVIF: Which Format Should You Use?
There is no universally best image format: photographs, interface graphics, archives, and web pages have different requirements.
Read guide →Compress JPG
Re-encode JPEG images at a chosen quality, or select another web-friendly output format, using local browser processing.
Drop image(s) here or click to browse
Editor & live preview appear below once you add an image.
Reviewed 2026-07-10
About Compress JPG
JPEG compression trades some image detail for a smaller representation. The quality control ranges from 10% to 100%, but its value is an encoder setting rather than a promise of a particular file size.
Images are decoded and encoded in the current browser tab. Large batches can consume substantial memory because compressed JPEG bytes expand to full RGBA pixel buffers while being processed.
Supported formats
- JPEG
- PNG
- WebP
- AVIF
How to use it
- Add the JPG files. Choose one or more JPEG images. Other supported image inputs can also be processed if you intentionally want to change formats.
- Choose format and quality. Keep the original format to produce JPEG from a JPEG source, or choose JPEG, PNG, WebP, or AVIF explicitly. Set the quality for lossy output.
- Compare the results. Compress, inspect fine detail at normal size and 100%, and compare the output size before downloading.
Useful for
- Reduce a photograph before attaching it to email or submitting a form.
- Create a lower-bandwidth copy of a large JPEG while retaining its pixel dimensions.
- Test JPEG against WebP or AVIF for a web image.
Limitations
- Repeated JPEG re-encoding accumulates loss; return to the best available original for each new export.
- A high quality value can produce a file close to or larger than an already optimized source.
- Compression does not resize dimensions, and source metadata is not copied into the re-encoded output.
Questions and answers
Does 100% quality mean lossless JPEG?
No. Standard JPEG encoding remains lossy at the highest setting, and the number is not comparable across all encoders.
How do I hit an exact upload limit?
The tool does not target an exact byte size. Try a representative quality, check the resulting size, and adjust; resizing first may be more effective when dimensions are unnecessarily large.
Will compression remove EXIF information?
The implementation decodes the image to pixels and creates a new file without copying the source EXIF, IPTC, or XMP blocks. Use a metadata viewer if the absence of a specific field is important.
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