Image Pixelizer
A browser-based tool that converts images into pixel art while preserving the original color balance. Everything runs locally in your browser, with adjustable pixel size and outline strength.
Drag and drop an image onto the upload area or click to select a file.
After auto-processing completes, adjust the pixel size and outline in Basic Settings, and fine-tune position in Advanced Settings if needed.
Check the result, press "Convert", and when satisfied, save as a PNG with "Download".
Upload Image
Click or drag & drop
Adjusts the coarseness of the pixel art. Smaller = finer, larger = coarser (step 2 px)
Set the output image size. Maximum 1500 px
Adjusts outline strength. "Strong" darkens outlines, "Light" makes them subtle
Sets the background color for transparent areas. Applied to preview only
Adjusts image position. X-axis for horizontal, Y-axis for vertical
Adjusts image zoom. 0.5 = half size, 2.0 = double size
AnimSprite Pixelizer
2D game development tool for batch converting sequential animation images to a common pixel size
Convert to Pixel Art in 3 Easy Steps
From upload to export, everything you need in a few simple steps
Prepare your image
Load an image by drag-and-drop or click. Images over 1500 px are automatically resized, and a preview appears once preprocessing is complete.
Adjust the result
In Basic Settings, tweak pixel size, outline, background color, and canvas size. In Advanced Settings, fine-tune position, scale, and display mode.
Convert and save
Press "Convert" to update the preview, check the result, then press "Download" to export as a transparent PNG.
v3.2.0(2026/02/21)
- Optimized internal processing
- Fixed settings panel layout
v3.1.0(2025/12/04)
- Improve settings panel with sandwich structure (fixed tabs/reset, scrollable settings, fixed buttons)
- Simplify processing display and optimize progress indicator
- Major mobile display improvement (enhance responsive design for all components)
- Unify theme colors to improve visibility and design consistency
v3.0.0(2025/10/10)
- UI improvement: Major tool layout update with optimized conversion progress display
- Fix optimal pixel size determination logic on first import
v2.5.0(2025/08/19)
- Improve conversion accuracy: Add automatic color optimization preprocessing on image import
v2.4.0(2025/08/18)
- UX improvement: Redesign conversion settings to be more compact
- Fix optimal pixel size determination logic on first import
v2.3.2(2025/07/22)
- UI improvement: Integrate image import into the left settings section with tabs (Import/Basic/Advanced)
- UX improvement: Add auto-switch to basic settings tab after image import
v2.3.1(2025/07/12)
- Fix CLS (Cumulative Layout Shift) issue: Dynamically set canvas element size on desktop to prevent layout shift
- Improve preview area: Auto-adjust height for portrait images (e.g. 9:16) to display larger
- Improve loading display: Compact centered progress bar with minimal overlay for better before/after comparison
v2.3.0(2025/06/24)
- Improve image quality: Implement adaptive internal smoothing for natural processing of subtle shading (e.g. blush) in hand-drawn illustrations
- Integrate as standard processing to preserve original artwork nuances in all conversions
v2.2.0(2025/06/05)
- Enhance preview: Add toggle between original and processed image
- Enhance preview: Add pixel grid overlay display
v2.1.0(2025/06/04)
- Add option to adjust output size while maintaining aspect ratio
v2.0.1(2025/05/31)
- Adjust initial recommended pixel size calculation logic on image import for more appropriate default values
v2.0.0(2025/05/23)
- Major UI/UX overhaul: Modernize overall design (unified color theme, animation effects, improved form usability), major desktop layout improvement (wider display, top-placed upload area, 2-column settings/preview), tabbed settings UI, simplified output size settings (max size limit, removed unnecessary presets, added reset to default), mobile display adjustments
- Image processing and performance enhancement: Introduce Web Workers with optimization (Transferable Objects) for background processing and improved responsiveness, improve preview update stability on parameter changes (processingId for sequential changes), improve large image handling (max render size with auto-adjustment, auto pixel size suggestion), enable outline processing by default with simplified UI
v1.2.1
- Make outline enhancement feature optional
- Preserve settings when loading sequential images
v1.2.0(2025/04/02)
- Implement outline enhancement feature
- Add loading overlay during conversion
v1.1.0
- Remove grid display feature
- Switch UI to tab format
v1.0.0
- Initial release