Reduce image file size without uploading
Shrink photos that are too large to attach or upload. A typical phone picture drops by eighty to ninety percent with no visible difference at normal viewing size.
Compress images nowWhy modern photos are so large
Phone cameras now capture twelve to fifty megapixels, which produces files of four to fifteen megabytes each. That is excellent for printing and pointless for a job application form, a marketplace listing or an email attachment, where the image will be displayed a few hundred pixels wide at most.
Two things drive the size down. Reducing the pixel dimensions removes detail nobody was going to see at display size, and increasing JPEG compression discards information the eye is poor at noticing. Used together and moderately, the result is usually indistinguishable from the original on screen.
docu4all applies both in your browser. Your photos are never uploaded, which is worth caring about when the picture is of an ID card, a medical document or your family.
How to do it, step by step
Add your photos
Drop in one image or dozens at once. JPG, PNG, WebP, GIF and iPhone HEIC all work.
Choose a level
Light, Balanced or Strong. Balanced suits email and web uploads; Strong is for strict size limits.
Set a maximum width
Anything wider is scaled down. 2000 px is generous for screens, 1200 px is plenty for most forms.
Download the results
Each file shows its original and new size, so you can confirm the saving before downloading.
Choosing a sensible quality setting
JPEG quality between 70 and 80 percent is the range most people cannot distinguish from the original at normal viewing distance, while cutting file size by roughly three quarters. Below about 50 percent, compression artefacts start to appear around sharp edges and text, which is most visible in screenshots and photographs of documents.
One caveat worth knowing: compression is not reversible. Saving a photo at lower quality discards detail permanently, and compressing an already-compressed file again degrades it further. Always keep your originals and treat the compressed copy as something you send, not something you archive.
Try it now — it is free
No account, no watermarks, and your file never leaves your device.
Compress images nowFrequently asked questions
Which image formats can I compress?
JPG, PNG, WebP, GIF and HEIC photos from an iPhone. Output is JPEG, which gives the largest reduction for photographs.
Will my photos be uploaded?
No. Compression happens entirely inside your browser, so the images never leave your device.
How much smaller will my photos get?
A typical phone photo drops by eighty to ninety percent at balanced settings. Screenshots and graphics vary more widely.
Can I compress many images at once?
Yes. Add as many as you like and compress them in one pass, then download them individually or all together.