Create Transparent Image
Create blank transparent PNG or WebP at any size up to 8192. Quick presets, file-size estimate, dimensions in filename. Free, client-side.
Create a blank transparent image at any size up to 8192×8192. PNG (lossless) or WebP (smaller, also supports alpha). 5 quick presets. File-size estimate, dimensions in filename.
How to Use Create Transparent Image
- Set width and height (1 to 8192 px each). Or click a quick-size preset chip.
- Pick format. PNG is lossless and universally supported. WebP is smaller (often 30-50% less) and also supports alpha, but requires modern browsers to display.
- Preview updates automatically as you type (200ms debounce). The checkerboard background shows the transparency.
- Copy the data URI for inline embedding, or download. The filename includes the dimensions (e.g.,
transparent-1920x1080.png
Frequently Asked Questions
Why would I want a transparent image file?
Layout placeholders during web design (reserves space without showing content), lazy-load spacers, hit-target overlays for invisible click zones, blank canvas for image-editing apps that need a base image to load, transparent base files for compositing in print layouts, and test files for tooling that needs a valid PNG/WebP input.
What’s the difference between PNG and WebP for transparent images?
PNG: lossless, supports alpha, ~150-300 bytes for a 1920×1080 fully-transparent file. Universal support. WebP: smaller (typically 60-100 bytes for the same blank), supports alpha, requires Chrome/Firefox/Edge/Safari 14+. For browser-only display, WebP wins. For email templates or older tooling compatibility, PNG.
What’s the maximum dimension?
8192 × 8192 px. The HTML spec doesn’t strictly cap canvas size, but most browsers fail past around 16k × 16k, and mobile Safari often fails earlier. 8192 works everywhere as of 2026.
Why is the file so small?
A fully-transparent image has zero color variation – every pixel is the same (alpha=0). PNG and WebP both compress repeating patterns aggressively. A blank 1920×1080 PNG is typically ~200 bytes; a blank WebP is ~70 bytes. The raw uncompressed pixel data would be 8.3 MB.
How is this different from CSS opacity?
CSS opacity makes an HTML element transparent in the browser’s rendering. This tool creates an actual file you can download, share, host on a CDN, attach to emails (where CSS support is limited), import into Photoshop/Sketch/Figma, or feed to tooling that requires a real image file.
Why might my WebP output downgrade to PNG?
Old browsers (Safari pre-14, some embedded WebViews) can’t encode WebP via canvas. The tool detects this via the banner at the top. If WebP encoding fails silently, the toast tells you and the filename uses .png.
Does true transparency look “checkered”?
No. The checkered pattern is a UI hint from this tool (and from Photoshop / image viewers) to visualize transparency. The actual file has no pattern – it’s truly invisible. Open the downloaded file in any image viewer to confirm.
Can I use the output commercially?
Yes. You drew it (or rather, you didn’t draw anything – but the file is yours regardless). No copyright restrictions apply to a transparent rectangle.
Is anything uploaded?
No. Canvas API runs in your browser. Nothing leaves your device.