Generate every app icon size at once
Upload one source image and instantly produce PWA, iOS, and Android icons at every standard size. Each PNG is downloadable individually or all at once.
image/* · runs locally · nothing uploaded
How it works
Pick an image, tune the options, then download the result. Everything runs in your browser.
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Pick a source
Upload a square master image. 1024×1024 or larger gives the best results.
Files stay in memory as an
HTMLImageElement— the original bytes are never uploaded, and EXIF metadata is preserved until you explicitly transform it.uploadcanvaslocaldecodeinput · bytesmaster · loadedmaster.png
loaded · decodedcanvas · ready - 02
Auto-scale every size
Each target size is rendered with high-quality smoothing for crisp icons.
Encoder quality is exposed where the format supports it — JPEG and WebP get a
0–1quality slider; PNG is lossless. Options re-render the canvas immediately.scaleoptionslive previewencoderqualitysteps · tunable17 · livedrawImage(img, 0, 0, s, s)
options applied · liveencoder · live - 03
Preview the grid
Inspect each size in the output panel — small icons render pixelated.
Pixel work runs on the Canvas 2D context —
drawImageresamples with the browser’s bilinear filter andgetImageData/putImageDataback per-pixel passes.previewrenderCanvas 2Dpx-perfectgrid · resampled0 · px-perfect16, 32, 48, … 1024
preview · livepx-perfect - 04
Download
Grab a single size or hit Download all to fetch every PNG at once.
Downloads ship via a hidden anchor with an object URL — no server round-trip, and the file on disk is untouched. The output filename inherits a sensible suffix.
exportdownloadblobclient-sideobject URLok · blobready · savedicon-512.png
shipped · ready to shipsuccess
Browser-only image work that scales
Convert with quality control
JPEG/WebP let you pick a 0–1 quality. Default 0.92 is a good compromise of size and visible quality.
PNG isn’t free
Use PNG only for transparency or sharp edges. For photos, WebP is smaller at the same perceived quality.
Strip EXIF for privacy
Photo EXIF often contains GPS, camera model, and timestamps. Strip before sharing public uploads.
Watch the colour profile
Convert to sRGB before web export. Wide-gamut images render oversaturated in non-managed browsers.
AVIF when it’s available
AVIF beats WebP on size at the same quality. Detect support via <picture> with fallbacks.
Lazy-load below the fold
Add loading="lazy" on <img>. The browser handles scheduling — no IntersectionObserver needed.
When to use this tool
Common workflows it speeds up.
PWA install icons
Cover every manifest size including 192 and 512. Decoded into a Canvas 2D context — original bytes never leave the tab, so you can process customer-uploaded photos, internal screenshots, or sensitive diagrams without privacy concerns.
px-perfectiOS app shell
Hand-off ready icons for Xcode asset catalogs. Encoders expose quality 0–1 where the format supports it (JPEG, WebP); PNG and AVIF stay perceptually lossless. Pick 0.85 for web, 0.95 for archival, 0.7 for thumbnails.
quality-tunableAndroid launcher
Densities from mdpi through xxxhdpi. Pair with the EXIF Stripper before sharing user-uploaded photos publicly. Camera serial numbers, GPS coordinates, and timestamps often hide in image metadata and leak more than the picture itself.
format-awareBuild automation
Pre-generate without a Node script in CI. Output preserves colour profile (sRGB) so it renders consistently across browsers, monitors, and print pipelines. Wide-gamut workflows can opt into Display P3 for modern Apple devices.
EXIF-safeQuick rebrands
Swap the source, get every size in one click. Re-runs only on option changes, never on window resize, so the canvas stays responsive on large images. drawImage uses the browser's bilinear filter for fast resampling.
client-sideCross-platform pack
Ship the same icon to every store at once. Downloads as .png, .jpg, .webp, or .avif with the correct MIME so editors apply native handling on save. The filename inherits a sensible suffix derived from the input.
compression-readyFrequently asked questions
Something missing?
Tell us what you need. We ship the top requests every two weeks.