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Marvin's Toolbox.

JPG Image Compressor

Compress images to JPEG at a target file size or quality, with presets for WhatsApp, Instagram and Discord, optional resizing and EXIF kept or stripped.

Runs entirely in your browser. Nothing you put in here gets uploaded.

Your images

Drop images here

Any format: JPG, PNG, WebP, HEIC… Click to choose files.

They never leave your browser.

Compression

Preset
Carry the original camera, date and GPS tags into the compressed JPEG. Turn off to strip all metadata.

Next steps

Send this tool's output straight into another tool.

EXIF Transfer

Copy the EXIF metadata from one photo onto another without changing the destination's pixels. That covers camera model, lens, focal length, exposure, GPS and more. Choose to replace all metadata or only fill in what the source provides.

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JPG Image Compressor

Compress images to JPEG at a target file size or quality, with presets for WhatsApp, Instagram and Discord, optional resizing and EXIF kept or stripped.

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Image Converter

Convert images between JPEG, PNG, WebP and AVIF, and open iPhone HEIC photos too. Drop in as many as you like, pick a format, and dial in the quality for the lossy ones. When you convert to JPEG, choose the colour that fills any transparency. Live previews, download one or all at once.

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EXIF Editor

See and edit the EXIF metadata inside a photo, then download it with your changes or save a copy with all metadata removed, GPS included. It reads JPEG, PNG, HEIC and more, and edits JPEG files.

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Image Annotator

Draw arrows, boxes, text, highlights and numbered steps on a screenshot, blur or pixelate anything private, crop the result and add a watermark. The finished image downloads as PNG or JPG or goes straight to your clipboard.

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Hash Generator

Hash text or a file with MD5, SHA-1, SHA-256, SHA-512, SHA-3, BLAKE2, BLAKE3, CRC32 and more, all computed live as you type. Compare against an expected checksum and copy any digest.

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Checksum Validator

Verify a file against its checksum. Drop the file and paste the expected hash or a sha256sum line, and the hash type is detected for you, from MD5 to BLAKE3.

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Data Compressor

Compress text or a file with gzip, deflate, brotli or Zstandard and see the size before and after, the compression ratio and how long it took. One click tries every method and recommends the smallest result.

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Data Decompressor

Decompress gzip, deflate, brotli or Zstandard data from a file or pasted Base64 and read the result as text or download it. Detects the format from the magic bytes where possible, with a manual override.

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About the JPG Image Compressor Tool

This tool makes image files smaller by re-saving them as JPEG. Drop in a photo and either aim for a target file size or set the quality by hand.

It reads JPG, PNG, WebP and other formats, and always gives you a JPEG back. Presets cover WhatsApp, Instagram, Telegram, Discord and email, or you can set your own limit.

What you can do

  • Compress an image to a target file size, like 100 KB or 2 MB.
  • Compress photos for WhatsApp, Instagram, Telegram, Discord or email.
  • Set the JPEG quality by hand.
  • Resize an image while compressing it.
  • Convert PNG or WebP photos to JPEG.
  • Keep or remove the photo's EXIF metadata.
  • Compress several images at once.

How to use the JPG Image Compressor

  1. 1Drop in one or more images, or click to choose them.
  2. 2Pick a preset, or choose Custom for full control.
  3. 3In Custom, set a target file size or a quality level, and turn on resizing if you want to cap the dimensions.
  4. 4Choose whether to keep the EXIF metadata.
  5. 5Check the preview and the before and after sizes, then download.

Target a file size, or set the quality

Target file size is the one to use when something has to stay under a limit. Set a ceiling in KB or MB and the compressor searches for the highest quality that still fits, shrinking the dimensions if it has to. Manual quality is the other way round, you pick the quality and see whatever size comes out.

Transparency and other formats

JPEG cannot store transparency, so any see-through areas in a PNG or WebP come out black. If you need to keep transparency, or you want a PNG, WebP or AVIF file rather than a JPEG, use the Image Converter.

EXIF is only carried over when the original is a JPEG that already has it. Images from PNG or WebP have no EXIF to bring across.

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See any image the way people with a color vision deficiency see it. Drop in a picture and preview protanopia, deuteranopia, tritanopia, the milder anomalous forms and monochromacy next to the original, then download any simulation as a full resolution PNG.

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Color Palette Extractor

Pull the dominant colors out of any image as a ready-to-copy palette. Choose how many colors you want, copy each one as HEX, RGB or HSL, and export the whole palette at once.

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EXIF Editor

See and edit the EXIF metadata inside a photo, then download it with your changes or save a copy with all metadata removed, GPS included. It reads JPEG, PNG, HEIC and more, and edits JPEG files.

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