How to convert PGM to JPEG
To convert PGM to JPEG, upload your PGM file, choose JPEG as the output format and press Convert. The finished JPEG file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter changes PGM images into JPEG files in seconds, with no software to install and no watermark. You can convert several files at once, resize them and choose the quality for formats that support it. Metadata such as location tags is removed from the output for privacy.
Why convert PGM to JPEG?
- Identical to JPG in quality and size
- Accepted by all software
- Adjustable compression
- Works with: every device, browser, editor and printer
What to expect from this conversion
- PGM is lossless and JPEG is lossy, so the file will usually get much smaller. Use the quality slider to balance size and detail.
PGM vs JPEG
| Property | PGM | JPEG |
|---|---|---|
| Full name | Portable Graymap | Joint Photographic Experts Group |
| Released | 1988, Jef Poskanzer (Netpbm) | 1992, JPEG committee |
| Compression | None (uncompressed) | Lossy |
| Transparency | No | No |
| Animation | No | No |
| Bit depth | 8 or 16-bit gray | 8-bit |
| Shown in browsers | No | Yes |
| Best for | grayscale processing; image-analysis research | systems that require the .jpeg extension; photographs |
Steps to convert PGM to JPEG
- Drop your PGM image file onto the converter, or click to choose it.
- Check that JPEG is selected as the target and adjust the options if you want.
- Press Convert, then download your new JPEG file when it finishes.
Tips for the best result
- Use quality 80 to 90 for photos: it is visually close to the original at a much smaller size.
- Set a width if the image will be shown on a small screen, which also reduces the file size.
- Choose a background colour before converting transparent images to a format without transparency.
Frequently asked questions
How do I convert PGM to JPEG?
Drop your PGM files on the converter, confirm that JPEG is the target and press Convert. Download each file or the whole batch as a ZIP.
Is the PGM to JPEG converter free?
Yes. It is free with no watermark, no sign-up and no limit on how many images you convert. The site is supported by ads.
Does converting PGM to JPEG reduce quality?
PGM is lossless and JPEG is lossy, so the file will usually get much smaller. Use the quality slider to balance size and detail. The quality slider only affects formats that use lossy compression.
Will transparency be kept when I convert PGM to JPEG?
PGM images do not contain transparency, so there is nothing to lose. JPEG does not support it either.
Which programs open JPEG files?
JPEG files open in every device, browser, editor and printer.
How many images can I convert at once?
Up to 20 images per batch, each up to 60 MB. Files are deleted from the server about 30 minutes after conversion.