How to compress JPG files
- 1 Drop your JPG photos on the box, or click browse to choose them. You can add many at once.
- 2 Choose the compression level and, if you like, a maximum width.
- 3 Press Compress. One image downloads directly; several come in a ZIP file.
- 4 Check the new size and file size shown under each image.
Getting the smallest JPG
Reducing the width is the biggest saving: a 4000 pixel photo shown at 1200 pixels wastes most of its size. Then choose the recommended level. For an exact size such as 100 KB, use Compress Image to 100KB; for PNG and WebP, use Compress Image.
- Never compress the same JPG many times; start from the original each time.
- Strong compression shows first in skies and skin tones.
- Converting to WebP saves another quarter or so.
Features
Three levels
Light, recommended or strong compression.
Resize at the same time
Cap the width at 2560, 1920, 1280 or 800 pixels.
Never bigger
If a photo is already optimised, the original is kept.
When to use it
Email and messaging
Shrink holiday photos before attaching them. For an exact limit such as 100 KB, use Compress Image to 100KB.
Websites
Smaller JPGs make pages load faster. For even smaller files, use JPG to WebP.
Job and exam forms
Many forms cap uploads at 200 KB or 500 KB.
Saving phone storage
Keep lighter copies of photos you only view on screen.
Related Image tasks
Frequently asked questions
How much can a JPG be compressed?
Phone photos often shrink by 50% to 70% at the recommended level. Reducing the width as well can cut the size by 80% or more.
Will compression ruin the quality?
At the recommended setting the difference is hard to see on a screen. Strong compression can show blockiness in skies and smooth areas.
Can I compress to a specific size?
For a target such as 50 KB or 100 KB, use the Compress Image to 50KB or 100KB tools, which adjust quality automatically.
Does it remove EXIF data?
Yes, the compressed copy does not include camera details or GPS location, which also saves a little space.
Why did one photo not get smaller?
It was already well compressed, so the tool keeps the original rather than making it bigger.
Should I keep the original?
Yes. Compression is lossy, so keep the original for printing or later editing.
Can I compress PNG here?
This page accepts JPG only. Use Compress Image for PNG and WebP.
Why are phone photos so large?
Modern cameras capture twelve megapixels or more and save at high quality, so each photo can be several megabytes. Most uses, such as email and websites, need far less detail.
Can I compress JPG files on my phone?
Yes. Open this page in your mobile browser, choose photos from your gallery, and download the smaller copies.
Are my photos uploaded to compress them?
No. Compression runs in your browser, so your photos are never sent to a server, which makes it safe for documents and personal pictures.
How this tool works. These image tools run entirely in your browser using the Canvas API built into every modern browser, the open-source libheif decoder for iPhone HEIC photos and Tesseract, a widely used open-source OCR engine, for reading text. Each tool is tested with real phone photos, screenshots and scans before it goes live, and nothing you open is sent to a server.
Built and reviewed by Hamza Farooq, founder and lead developer
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