Sprite Resizer

Resizes sprite sheets by scaling frames while preserving the grid layout and padding, helping game developers and artists adapt atlases for multiple target resolutions.

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2,160+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Sprite Resizer processes input data instantly inside your browser.

Sample Input Image dimensions: 4000 x 3000 pixels (File size: 5MB PNG)

Computed Result Output WebP Image: 1920 x 1440 pixels (File size: 350KB, 88% reduction)

Execution Mode Client-Side In-Browser JS

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About This Tool

The Sprite Resizer analyzes a sprite sheet organized in a uniform grid and computes scaled frame dimensions based on a user-defined scale factor or target size. It preserves the original grid (columns and rows) and keeps inter-frame padding consistent, so the resulting atlas remains animatable and compatible with existing engines. This tool is aimed at game developers, pixel artists, and asset pipelines that need to adapt atlases for different platforms without re-authoring frames. By maintaining pixel boundaries and transparent margins, it minimizes artifacting and preserves animation timing. Core value lies in deterministic outputs, metadata generation, and format versatility. Use cases include scaling for mobile sprites, adapting old atlases to newer resolutions, and batch resizing across multiple sheets. The tool differentiates itself with strict grid preservation, robust validation, and optional padding controls that reduce manual editing.

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How to Use

Provide inputs by uploading the sprite sheet and specifying frame dimensions and grid size.
Choose the scaling method by setting scale_factor or target size and adjust optional padding and interpolation.
Run the calculation to generate the new grid and sheet dimensions.
Retrieve the resized sprite sheet and the accompanying metadata JSON.
Integrate the outputs into your asset pipeline and test in your game engine.

Frequently Asked Questions

Find Quick Answers

What inputs are required?

Required inputs include: the sprite sheet image, frame_width_px, frame_height_px, columns, rows, and scale_factor (or target_width/height). Outputs include the resized sheet and a metadata JSON describing new dimensions.

Which formats are supported?

Input formats commonly accepted are PNG, JPG, WebP, and SVG. Outputs are provided as PNG or WebP to preserve quality and transparency where applicable.

How does padding affect results?

Padding adds space between frames. It is configured in pixels and affects the computed sheet width and height as: sheet_w = columns × new_w + (columns − 1) × padding; sheet_h = rows × new_h + (rows − 1) × padding.

Can I revert scaling or adjust later?

Yes. You can apply a scale factor of 1 to revert to the original size or re-run with a new factor. Metadata allows re-generation without re-uploading frames.

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