How do I convert an image to JPG online?
Upload a PNG, WebP, GIF, BMP or AVIF file and this tool will convert image to JPG instantly. Transparent areas are filled with white (or any colour you pick), because JPG cannot store transparency. Adjust the quality slider, or set a KB limit if a form asks for one, then download. Your image is converted on your own device.
Why convert to JPG?
JPG (also written JPEG) is the most widely accepted image format. Almost every government portal, exam form, job site and email service accepts it. Some do not accept PNG or WebP at all. Common reasons to convert:
- "Only JPG/JPEG allowed" messages on application forms.
- PNG screenshots that are too big. A photo saved as PNG can be 5–10 times larger than the same photo as JPG.
- WebP images saved from websites that older software cannot open.
- Sharing on any device, from old phones to office printers.
JPG vs PNG vs WebP
| Format | Compression | Transparency | Best for |
|---|---|---|---|
| JPG / JPEG | Lossy, small files | No | Photos, form uploads |
| PNG | Lossless, bigger files | Yes | Logos, screenshots with text, graphics |
| WebP | Lossy or lossless, very small | Yes | Websites |
| GIF | 256 colours | Yes (on/off) | Simple animations |
If your image has text or sharp lines, such as a screenshot, use a high JPG quality (90% or more) to avoid fuzzy edges.
Steps to convert PNG or WebP to JPG
- 1Upload the image
PNG, WebP, GIF (first frame), BMP and AVIF are supported in modern browsers.
- 2Pick the background colour
White is standard. It replaces transparent areas.
- 3Set quality or a KB limit
92% keeps photos looking original. Turn on "Limit file size" for forms with a KB cap.
- 4Download the JPG
Optionally resize at the same time with the dimension presets.
What about HEIC photos from iPhone?
iPhones save photos as HEIC by default. Most browsers on Windows and Android cannot open HEIC, so a web tool cannot read them. Two easy fixes:
- On iPhone, go to Settings → Camera → Formats and choose Most Compatible. New photos will be JPG.
- For an existing photo, share it to yourself by email or "Save to Files" as JPG, or take a screenshot and convert that.
Does converting to JPG lose quality?
JPG uses lossy compression, so a small amount of detail is removed. At 90–95% quality the change is very hard to see. Avoid converting the same image to JPG many times, because each save adds a little loss. Read more about JPEG compression and about the WebP format.
Next steps: reduce the size with Photo to 50KB or Photo to 100KB, change dimensions with Resize Image by Pixels, or combine JPGs into one document with Convert Images to PDF.
Frequently Asked Questions
How do I convert PNG to JPG?
Upload the PNG on PhotoKB Convert Image to JPG and download. Transparent areas are filled with white or the colour you choose.
How do I convert WebP to JPG?
Upload the WebP file and download the JPG. It works the same way as PNG.
Will I lose quality?
At 90–95% quality the difference is very hard to see. Lower quality makes smaller files.
Can I convert HEIC to JPG here?
Most browsers cannot open HEIC. On iPhone, set Camera → Formats → Most Compatible, or share the photo as JPG first.
Can I make the JPG smaller than a KB limit?
Yes. Turn on Limit file size and enter the KB value.
Is my image uploaded?
No. Conversion happens in your browser.
About this tool
Built and maintained by the PhotoKB Editorial Team. We test every tool with real phone photos, scans and PDFs before each update. Exam and portal values are based on public official notifications. PhotoKB is not linked to any exam body, so always confirm current rules on the official website. Last updated: 8 November 2026.