PackPix — Offline Sprite Sheet Maker & Packer

PNG frames in. Sprite sheet out.

PackPix takes a batch of PNG frames — an animation you exported frame by frame, a set of icons, a texture atlas from an old project — and packs them into a clean sprite sheet, entirely inside your browser. Drop the files, pick a layout, watch the live preview, export a PNG. No install. No account. No upload. No internet after download.

What it does

• Drop in a batch of PNGs — multiple files at once, sorted by name (numeric-aware), no duplicates
• 3 layouts in Free — Shelf, Grid, Strip, plus gap padding 0–16 px
• Live atlas preview — every frame outlined and numbered over a checkerboard, updated as you tweak
• Stats at a glance — sheet size, fill rate, frame count, estimated PNG weight
• PNG export — exact pixels, rendered 1:1 on canvas
• 16 layout presets — Default, Tight, Neat, Animation Strip, Grid 4, Grid 8, Dense MaxRects, Rotate + Pack, Power of Two, Big Sheet 2048, Vertical Strip, Canvas 512, Unity Ready, Godot Ready, Phaser 3, RPG Maker Grid (6 unlocked in Free)
• English & Japanese UI

Free vs Full

Free: Shelf/Grid/Strip layouts, gap padding, live preview, PNG export, 6 presets.
Full: MaxRects dense packing, vertical strip & canvas layouts, edge trim, 90° rotation, power-of-two sizing, JSON atlas (TexturePacker-style, now with offset & originalSize so trimmed frames stay aligned in animation), custom frame naming, and one-click batch ZIP.
Get PackPix Full ($5)

100% offline by design

PackPix contains zero network code. Your PNGs are read and packed with the Canvas API inside your tab — nothing is uploaded, nothing is recorded, no telemetry. It keeps working forever, even offline, from a single HTML file. Double-click, done.

Hand-coded. No AI-generated content, no telemetry, no network calls. Everything runs locally in your browser.

Requirements

Any modern browser (Chrome, Edge, Firefox, Safari). Works on Windows, macOS, Linux.

You own your sprites

Exported sheets are 100% yours — use them in commercial projects, free of royalties. The software itself is licensed (no redistribution of the tool). See LICENSE.txt inside the ZIP.

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PixCrunch — offline image compressor & resizer: batch shrink screenshots and store images to PNG, JPEG or WebP before you upload them. Free edition (10 files per batch) + Full ($5, unlimited batches + target size).

Updates included. Refunds follow itch.io policy.