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About this tool
Convert photos and signatures between JPG, JPEG and PNG in the browser, with the exact extension and size portals demand.
This converter turns a photo or signature between JPG, JPEG and PNG entirely in the browser, writing the exact file extension a government portal's upload validator demands. JPG and JPEG are the same JPEG format — only the extension spelling differs — and the tool can also binary-search the JPEG quality to land under a KB limit such as the 20-50 KB photo rule common on Indian recruitment portals. Nothing is uploaded: the canvas re-encoding happens on your device.
Open Image Format Converter For Forms on AltFTool — it loads instantly in your browser.
Upload or drag in the file you want to work with.
Adjust the settings and preview the result.
Download the finished file to your device.
Choose .jpg or .jpeg output explicitly, because some portal validators accept only one spelling.
Automatic quality search compresses a JPEG under the portal's size limit when physically possible.
The image is converted with the browser's own canvas encoder and never leaves your device.
No — they are the identical JPEG image format; JPG exists only because old Windows systems limited extensions to three letters. Some government portals' validators nonetheless check the extension string literally, which is why this tool lets you pick the exact spelling.
Select the PNG, choose JPEG/JPG as the output, pick the extension the portal wants and press Convert. Because JPEG has no transparency, any transparent area in the PNG is flattened onto a background — white by default, which is what photo and signature specifications expect.
It re-encodes the image at successively adjusted quality levels using a binary search over the JPEG quality parameter (up to 7 encodes), keeping the highest quality that still fits under your target. If even minimum quality cannot reach the target, the image's pixel dimensions are too large and need reducing first.
No — JPEG compression losses are permanent, and saving as PNG only preserves the already-lossy pixels in a lossless container, usually at a much larger file size. Convert to PNG only when a portal explicitly requires the PNG format.
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<iframe src="https://www.altftool.com/embed/widget/form-image-format-converter"
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<p style="font-size:12px;margin:4px 0 0">Widget by <a href="https://www.altftool.com/tools/all/form-image-format-converter?utm_source=embed&utm_medium=widget">AltFTool — free online tools</a></p>