Compress Image
Shrink the file size to an exact KB target, or use a simple quality slider.
How to compress image online
- Upload your image — Drag & drop a file or click Upload Image.
- Choose a compression method — Pick Auto (quality slider) or Compress to Size to hit an exact KB target.
- Compare the result — See the new file size and quality before downloading.
- Download the compressed image — Click Go to Download to save the smaller file.
Why compress images with ToolsGuru?
- Two compression modes — Use a simple quality slider, or target an exact file size in KB.
- See the size before you download — The result shows exactly how much smaller the file is.
- Faster websites & emails — Smaller images load quicker and are easier to attach or upload elsewhere.
- Private and free — Compression happens in your browser — no upload, no watermark, no cost.
Compress image to an exact KB size
Different forms ask for different limits. Tap a quick-target button above or type a custom value in "Compress to Size" — here's what each common size is typically used for:
- Compress image to 20kb — the tightest limit, usually for small ID-photo slots on older government portals; expect some visible quality loss on large source photos.
- Compress image to 40kb — a common signature or thumbnail-photo requirement on exam and recruitment forms.
- Compress image to 50kb — the most requested passport-photo size for exams like SSC, UPSC, banking and university admissions.
- Compress image to 100kb — the standard cap for Aadhaar updates, PAN corrections and most Indian e-forms, with good visible quality.
- Compress image to 200kb — comfortable for resume photos, LinkedIn-style profile pictures and job-portal uploads.
- Compress image to 300kb — a good fit for email attachments and application forms that reject files over a few hundred KB.
- Compress image to 400kb — a generous ceiling for high-resolution uploads like portfolios or blog images.
Frequently asked questions
How much can I compress an image without losing visible quality?
It depends on the photo, but reducing quality to around 70-85% usually keeps images looking sharp while cutting file size noticeably.
Can I compress an image to an exact size, like 100 KB?
Yes — switch to "Compress to Size" and enter your target size in KB; the tool adjusts quality automatically to get as close as possible.
Which format gives the smallest file size?
JPEG generally compresses photos smaller than PNG. Use our Convert Image tool if you also need to change the format.
Is compression done on a server?
No, all compression happens locally in your browser using the Canvas API — your file is never uploaded.
How do I compress an image to 20kb or 50kb for a form?
Click the 20 KB or 50 KB quick-target button above, upload your photo, and the tool automatically finds the quality level that fits the limit — common for exam and passport-photo uploads.
What KB size do government forms like Aadhaar or PAN usually need?
Most Indian government portals ask for photos or signatures around 20 KB to 100 KB, and scanned documents up to 200-300 KB. Check the exact limit on your specific form before uploading.