JPG Under 50KB

Browser-local tool

Use JPG Under 50KB

Your image is decoded and re-encoded on this device. No upload request is made.

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Maximum sizeKBOutput format

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About JPG Under 50KB

A 50KB limit is common on application portals that were designed for small ID photographs rather than modern phone cameras. The requirement is binary: 50,001 bytes can be rejected even when the picture looks identical to a compliant one. This tool produces a JPEG, searches for the highest encoding quality below the selected ceiling, and reduces pixel dimensions only when quality adjustment cannot do enough. It runs inside the current browser tab, which matters when the image is a signature, identity photograph, or personal document. The selected file is decoded from your device and the result is offered through a temporary local download URL; it is not posted to Shard Tools or another service.

Shape and export choices

The browser decodes the selected JPG, PNG, or WebP. Transparent input is placed on a white background because JPEG cannot preserve transparency.
The first pass keeps the available dimensions and performs a binary search through JPEG quality settings. Each pass narrows the remaining range instead of repeatedly subtracting an arbitrary percentage.
When even the lowest useful quality remains above 50KB, the engine searches image dimensions. It looks for the largest width and height that permit a compliant encode, then repeats the quality search at that size.
The byte count shown in the result is taken from the generated Blob itself. The download is therefore the same object that was measured, not an estimate based on megapixels or the source file.
Re-encoding removes EXIF fields such as camera model, capture time, orientation, and embedded GPS coordinates. The visible pixels are rotated by the browser decoder before the new JPEG is produced.

Good fits for JPG Under 50KB

Small profile photograph

A square portrait intended for a compact profile slot can often retain useful facial detail below 50KB because the displayed dimensions are modest. Crop unnecessary background before compression when the face occupies only a small part of the frame.

Photographed signature

A signature has large areas of blank paper. Converting it to JPEG can fit the limit easily, but gray lighting and shadows consume bytes. A clean, evenly lit crop gives the encoder a simpler image and a clearer result.

Check the image before download

Fifty kilobytes is a severe budget for a large photograph. A portrait can usually tolerate it at application-form dimensions, but a full document page with tiny text may become difficult to read.
The output may be noticeably below 50KB. JPEG encoders expose discrete outcomes, and adding filler bytes merely to approach the limit would make the file larger without improving its picture quality.
Do not compress an already compressed download again. Starting from the original gives the search more image information and avoids stacking block artefacts around edges and text.
A portal may also enforce width, height, aspect ratio, DPI, or file-name rules. Passing the byte limit does not guarantee those independent requirements are satisfied.
The tool cannot recover detail that was blurred, overexposed, or cropped out before processing. Check the preview and final dimensions before submitting an important form.

Questions about JPG Under 50KB

Why did the image dimensions change?

The engine first tries quality adjustment at the available dimensions. It reduces dimensions only when the file cannot fit below 50KB at the lowest useful JPEG quality.

Is 50KB the same as 50,000 bytes?

Upload portals are inconsistent. This tool treats 50KB as 50 × 1024 bytes, or 51,200 bytes. If a portal explicitly states 50,000 bytes, enter 48.8KB or a slightly lower custom limit.

Can I use a PNG input?

Yes. It will be converted to JPEG. Transparent areas become white, and lossless screenshot edges may look softer because JPEG is designed primarily for photographic content.