Local browser tool - JPG, PNG, WebP
Image Compressor Online
Choose a target file size, compress JPG, PNG, or WebP locally, then download the smaller image.
Compress to 100KB starter target
Pick a file, target size, output format, and compression mode.
Advanced controls
Preview and result
Compare the original and compressed output before downloading.
- Original size
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- Compressed size
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- Reduction
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- Original dimensions
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- Final dimensions
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- Output format
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Best uses for chosen KB or MB
This image compressor online page is the broad hub for reducing images by file size. Use it when you do not know the final limit yet, or when you want to compare common targets before choosing a preset page.
Use the broad compressor when you want to test several targets before committing to one. After you know the exact upload limit, move to a preset target page so the tool, examples, and FAQ match that file-size requirement.
- general website uploads
- email attachments
- profile images
- CMS media libraries
- documents that need smaller embedded images
Search intent this page solves
Most visitors are not looking for a generic image editor. They need an image that fits a real upload limit, passes validation, and downloads immediately. image compressor online keeps the tool first, then supports the decision with readable guidance.
The page supports related searches such as online image compressor, compress image online, image compression tool, and compress images by file size without forcing one exact target.
How to compress image online online
Quick steps
- Upload a JPG, PNG, or WebP image from your device.
- Keep the target set to chosen KB or MB or enter a different KB or MB value.
- Choose Auto, JPG, WebP, or PNG output based on the file type you need.
- Select Balanced, Smallest, or Keep dimensions, then run the compressor.
- Check the final size, dimensions, reduction percentage, and status badge before downloading.
Why the result may vary
The compressor uses browser canvas export, binary search over image quality, and dimension reduction when needed. A simple screenshot may reach chosen KB or MB with little visible change, while a detailed camera photo may need stronger compression.
The best target depends on the upload limit and the amount of detail in the source image. A 20KB image is useful for strict portals, while 300KB or 500KB keeps more detail for larger web or sharing use cases. The closest-result message appears when the browser has already tried the allowed quality and dimension range but the file is still above the target.
Best format for reduce image size online
Auto is the safest default for most users. JPG is broadly accepted by forms and usually works well for small KB limits. WebP can create compact files in supported browsers, especially for colorful images. PNG is useful for transparency or crisp screenshots, but browser PNG output has limited quality control, so it can be harder to hit strict targets.
If an upload form says it accepts only JPG or JPEG, choose JPG output. If it accepts modern web formats and file size is the main issue, try WebP. If you must preserve transparency, choose PNG and expect a larger closest result for tiny KB targets.
Mode recommendations
Start with a common target such as 50KB, 100KB, or 200KB. If the page or portal gives an exact limit, use the custom target or a matching preset page.
Keep dimensions is useful when a portal checks exact pixel width and height, but it cannot resize the image to solve a difficult target. If Keep dimensions cannot get under chosen KB or MB, switch to Balanced or Smallest and allow the canvas to reduce dimensions.
FAQ
What does this image compressor online do?
It lets you compress images online by choosing a KB or MB target, then previewing and downloading the smaller file. The browser handles the compression locally.
Can I choose an exact file size?
Yes. You can enter a custom KB or MB target, or use preset pages for common limits such as 20KB, 50KB, 100KB, 200KB, 300KB, and 500KB.
Are JPG, PNG, and WebP supported?
Yes. You can upload JPG, JPEG, PNG, or WebP files. Output options include Auto, JPG, WebP, and PNG where the browser supports them.
Does the image get uploaded to a server?
No. The file is read with FileReader, decoded in the browser, drawn to canvas, and exported with canvas.toBlob. No backend upload is used.
Why should I use a preset target page?
Preset target pages match common upload limits and give more specific guidance for that size. They also keep internal links clear for users and search engines.
What should I do if compression is not enough?
Try Smallest mode, choose JPG or WebP, lower the max working width, or select a larger target if the source image has too much detail for the current limit.