Pick the limit you actually need
Choose a preset from 20KB to 5MB or enter a custom target.
Browser-based image compressor
Make images smaller.
Keep the moment.
SizeMint — Small files. Big difference.
SizeMint helps you hit practical file-size limits such as 50KB, 100KB, 200KB, 1MB or a custom target — with a workflow designed to feel as simple as the result. Images are processed in your browser.
Local browser processingJPG · PNG · WebP · AVIFMultiple imagesNo account required
A target-first workflow
1 · Choose a limit100 KB
2 · Adjust outputWebP / JPG / PNG
3 · Compress locallyIn your browser
4 · DownloadYour result
A file-size target is often more useful than a quality percentage when an upload form has a hard limit.
Drop images here
or click to choose files
JPG, PNG, WebP, AVIF, GIF or BMP · multiple files supported · up to 25 MB eachAutomatic uses WebP where supported. PNG is lossless, so its quality setting does not work like JPEG/WebP quality.
0 images
Processing locally
Your image stays in this browser while SizeMint searches for a practical result under your target.
Finalizing result
Preparing your compressed image
Your result is being finalized — 15s remaining.
This preparation step does not upload your image or require an advertisement interaction.
Done
Compressed images
The suite
Every image tool, in your browser.
No uploads, no accounts. Pick a tool and start.
Advertise on SizeMint
Want your ads to be placed on our web?
Contact us about placing your brand beside the SizeMint image compressor.
Contact Us →Control the trade-off
Choose an output format, quality and optional maximum width.
Check the real result
Each result shows its final size, dimensions and whether the target was reached.
How to compress an image
How to compress an image to a specific file size
SizeMint is a free browser-based image compressor that reduces JPG, PNG, WebP and AVIF images to a specific file size, such as 20KB, 50KB, 100KB, 200KB or 1MB. Your images are processed entirely in your browser and are never uploaded.
To compress an image to a target size: drop your image into SizeMint, choose a target size from the presets or enter a custom value, pick an output format or leave it on Automatic, then download the compressed result. SizeMint tries progressively smaller dimensions and encoder settings until the file fits the target, and reports the real final size.
Key features
Target size control: set exact file-size targets from 20KB to 5MB. Format support: works with JPG, PNG, WebP and AVIF files. Privacy: 100% browser-based processing with no server uploads, no signup and no watermark.
Image compression, explained
Why compress to a target size?
Many upload forms, profile systems and document portals impose a maximum file size. SizeMint takes a target-first approach and reports the real result.
JPG, WebP or PNG?
JPG
A broadly supported lossy format suited to photographs.
WebP
A modern web-friendly format with a useful size/quality balance.
PNG
Lossless and useful for transparency, screenshots and graphics.
AVIF input
SizeMint accepts AVIF input when the browser can decode it.
What happens inside your browser?
The compressor uses standard browser image APIs to decode, resize and encode candidate results. The resulting Blob is offered directly for download.
Privacy by design
The core compressor processes selected images in your browser. See the Privacy Policy for current disclosures.
More practical guides
Read the SizeMint image compression guides or visit the About page.
FAQ
Questions people have before compressing an image
Does SizeMint upload my images?
No. The core compressor is designed to process selected images in your browser.
Can SizeMint guarantee an exact file size?
No. File size depends on image content, dimensions, browser encoders and format.
What happens if the target is too small?
The compressor tries progressively smaller dimensions and encoder settings and reports best effort when necessary.
Why can PNG be difficult to shrink?
PNG is lossless and its quality parameter does not work like JPEG/WebP quality.
Can I compress several images at once?
Yes. Select multiple supported images and process them individually in your browser.
Can I reduce image dimensions?
Yes. Set a maximum width, and the compressor may also reduce dimensions when needed.
How can I compress an image to a specific file size?
Use SizeMint's free browser-based image compressor: drop in your image, pick a target size such as 20KB, 50KB, 100KB or 200KB, and download the result. The compression happens entirely in your browser, so your images are never uploaded.
What is SizeMint?
SizeMint is a free browser-based image compressor for JPG, PNG, WebP and AVIF images. It reduces images to practical file sizes such as 20KB, 50KB, 100KB, 200KB or 1MB without uploads, signups or watermarks.
How do I compress an image to 100KB?
Open SizeMint, drop in your image, select the 100KB target, and download the compressed result. If the image cannot reach exactly 100KB, SizeMint reports the closest result it achieved.