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Image toolJPEG, JPG, PNG, WebP, GIF, BMP → JPEG, PNG, WebPRuns in your browser

Signature Resizer

Resize a scanned or photographed signature to an exact pixel size — or within a maximum file size — without ruining its shape. All in your browser.

  • No upload — processed on this device
  • No account needed
  • Free to use
Open the tool
Resize
1920 × 1080
original
1280 × 720
output
56% smaller

Keep going

The natural next step

WorkflowCyber café & service centre workflowsThe tools a cyber café or online service centre runs all day: print customers' passport and ID photos, prepare documents for printing, combine application pages, and keep the queue moving without uploading anyone's files.GuideWhy a signature becomes blurry after compressionThin strokes are exactly what lossy encoders attack. What is happening to your signature image, and the settings that keep it readable.Related toolSignature MakerDraw your signature on a pad or type your name, then download it as a transparent PNG — sized and trimmed for signing PDFs.

The details

How it works and what to expect

How it works

  1. Upload your signature (scan or photo). Transparent PNGs stay transparent.
  2. Choose how to size it: fit a box, fix the width or height, or force exact dimensions.
  3. Optionally cap the file size — the engine re-encodes until it fits the limit.
  4. Download the resized signature and use it wherever the size is required.

Size notes

  • Fit and single-edge modes always keep the aspect ratio.
  • Exact width × height may stretch the signature out of shape.
  • JPEG never keeps transparency; use PNG for cut-out signatures.

Privacy

Signatures are processed locally and never uploaded.

Practical guidance

Using this tool well

When it is the right answer, what tends to go wrong, and what to check before you rely on the result.

Why use it

Signature fields usually constrain both pixels and bytes. Resizing to an exact pixel size — or to a maximum file size without changing the shape — solves the constraint in one pass instead of a cycle of trial and error.

Typical situations

  • A form accepts a signature image but rejects it for being over a KB limit.
  • The required pixel width is stated in the instructions.
  • A scanned signature is enormous and needs trimming to a sensible size.

Common problems

  • The signature lost its proportions

    Entering both width and height freely reshapes it. Keep one dimension fixed, or use the exact-pixel mode only when the required ratio matches your scan.

  • It is under the size limit but still rejected

    Some forms also constrain format or dimensions. Check all three — format, pixels and bytes — against the instruction text.

  • The background is opaque

    Keep the file as PNG if the signature needs to sit over a form field; JPEG cannot carry transparency.

Check before you submit

  1. Open the result and confirm the shape still matches your handwritten signature.
  2. Check the file size sits comfortably below the limit, not exactly on it.
  3. Confirm the format matches what the form accepts.

Read next

Guides and reference

The reading that goes with this tool — a walkthrough of the job, and the terms it uses.

Terms used on this page

Defined in the site glossary, with the practical context that matters here.

Guided

This tool inside a workflow

A ready-made sequence that solves a whole job — this tool is one step in it.