Compress Image to 500KB or Less
Compress photos to 500KB online. Perfect balance of size and quality for email attachments and web uploads. Free and private.
About the Compress to 500KB or Less
Email providers often cap attachments around 500KB per image. This compressor targets exactly that limit, using the highest JPEG quality that fits — usually retaining excellent photo quality while cutting multi-megabyte originals down to size.
How it works
The compressor performs an encode-measure-adjust loop until the file fits 500KB at the highest quality possible. At this roomy target, most 12–24 megapixel photos survive with virtually no visible difference — you're mainly paying for the megabytes, not the pixels.
How to use it
Drop up to 10 images, choose JPG or WebP, and process. Results show exact sizes so you can confirm each one came in under the limit. Files that are already small pass through with minimal change, and everything downloads individually or zipped.
Supported formats & limitations
Input formats: .jpg, .png, .webp (30MB max each). Output: JPG or WebP, 500KB cap. If your source is a 20MP photo that lands too soft, resize it to around 2000px first; 500KB spreads across fewer pixels much more comfortably.
Common use cases
Useful for real-estate listings, blog hero images, marketplace photos and any portal that blocks multi-megabyte uploads. It's also a common pre-flight step for print shops that accept email submissions with a 500KB-per-file policy.
Frequently asked questions
How private is Compress to 500KB or Less?
Everything runs locally in your browser via the Canvas API. Your picture never leaves your machine — there is no upload step at all, so processing is as private as working in an offline editor.
What kind of image files work with this tool?
JPG, PNG or WEBP inputs are supported, up to 30 MB per file. For exotic formats, convert them first with one of the converter tools, then come back.
What are the size and batch limits?
You can queue 10 files per run, each up to 30 MB. Results download individually or bundled as a single ZIP.
Can I fine-tune the result before downloading?
You can adjust Output format. Results are previewed after processing, so tweak values and re-run until the output looks right.
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