How to compress an image to an exact file size
Use an exact-size image compressor when a form says your image must be under a specific limit such as 50 KB, 100 KB, 500 KB or 1 MB.
Guides
Practical help for image and PDF upload problems
Learn how file size, dimensions, formats and privacy affect uploads before you submit an image or PDF to another site.
- Original practical guidance
- No-upload privacy focus
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These guides are written for real upload problems: files over a KB or MB limit, confusing formats, rejected form uploads and platform image preparation.
File size
Image file size guide for uploads
Image file size depends on dimensions, format, compression settings and image detail. The same 1200 x 800 image can be small or huge depending on what it contains.
How to compress an image for email
Email attachments can fail when images are too large, especially when several photos are attached at once. Compress first, then package files only if that helps your workflow.
Why is my image too large?
An image can be too large because it has too many pixels, uses the wrong format for its content, contains complex detail, or includes extra metadata.
Privacy
How to compress an image without uploading it
No-upload compression means your selected image is handled on your device for the tool workflow instead of being sent to a server for processing.
Formats
JPEG vs PNG vs WebP
JPEG, PNG and WebP solve different problems. The best format depends on whether you need small photo files, transparency, sharp graphics or broad upload compatibility.
Forms
How to reduce image size for online forms
When a form rejects an image, the issue is usually file size, dimensions, format, or a combination of those settings.
Passport photo file size guide
Passport and official-photo uploads can have strict technical limits, but file size is only one part of acceptance.
Platform
How to compress and resize an image for LinkedIn
LinkedIn images often need both sensible dimensions and a file size that uploads cleanly. Start with a reviewed preset, then adjust manually if your image needs it.
How to prepare a YouTube thumbnail image
A YouTube thumbnail needs the right wide shape, readable detail and a file that uploads cleanly. Use the preset as a starting point, then preview before posting.