Small letters and table lines can acquire fuzzy or coloured edges after a screenshot becomes JPG. Check whether its pixel dimensions also changed before recompressing it. Resizing and encoding need separate checks.
Start with a readable source
MDN recommends lossless encoding for screenshots and line art because blurred edges and colour fringes are conspicuous. JPEG is lossy, while PNG is lossless.
Our recommendation is to retain the original screenshot and export delivery copies. If digits or Thai marks are already unreadable, capture a clearer source. Changing formats is not a method for reconstructing missing text.
Diagnose the difference
| Symptom | Our suggested check |
|---|---|
| Everything became smaller | Compare pixel width and height |
| Same dimensions, rougher edges | Compare format and compression settings |
| Clear locally, unclear after sending | Download the received copy and compare |
| Source is also unreadable | Capture again or request the source file |
File size alone does not measure readability. A smaller copy may omit detail the recipient needs.
Export and inspect
- Open Convert image and select the source.
- Try PNG when accepted; if JPG is required, export directly from the source.
- Open the result and inspect names, digits and small marks at its intended viewing size.
- Check both pixel dimensions and file size before sending.
The site's JPG/PNG converter uses the decoded image dimensions. It is not AI sharpening. If you need fewer pixels, use Resize image separately and recheck the text.
If the copy remains too large
Try Compress image from the original and compare exports. Do not choose an unreadable copy merely to meet a size limit. Where the recipient permits it, splitting a long screenshot into readable sections is another workflow to consider.
See PNG, JPG and transparency for background handling. For copying text, see screenshot OCR and verify recognised words against the image.
