Render images as Unicode Braille dots
8-dot Braille patterns pack twice the detail of regular ASCII art. Adjust width, threshold, and inversion. Runs locally.
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 image
Anything decodable: PNG, JPEG, WebP, GIF.
Files stay in memory as an
HTMLImageElement— the original bytes are never uploaded, and EXIF metadata is preserved until you explicitly transform it.inputuploadcanvaslocaldecodeinput · bytesimage · loadedload: image/*
loaded · decodedcanvas · ready - 02
Sample 2x4 cells
Each Braille glyph carries 8 dots in a 2×4 grid — that's 2× the horizontal and 4× the vertical detail of plain ASCII.
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.sampleoptionslive previewencoderqualitycell · tunable2x4 · livecell = 2 cols × 4 rows
options applied · liveencoder · live - 03
Threshold
Pixels darker than the threshold (or lighter if inverted) become filled dots.
Pixel work runs on the Canvas 2D context —
drawImageresamples with the browser’s bilinear filter andgetImageData/putImageDataback per-pixel passes.binaryrenderCanvas 2Dpreviewpx-perfectthreshold · resampled128/255 · px-perfecton if lum < 128
preview · livepx-perfect - 04
Copy or save
Each row is a string of Unicode Braille glyphs (U+2800 to U+28FF).
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 · savedbraille.txt
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.
High-res ASCII
Twice the horizontal detail of regular ASCII art. 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-perfectTerminal logos
Dense logos for shell startup banners. 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-tunableChat avatars
Drop a tiny image into Discord/Slack as text. 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-awarePlain-text artwork
Pure text output for plain-text contexts. 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-safeDemoscene
Single-message demos in chat clients. 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-sideTwitter art
Tiny dense images that fit in a tweet. 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
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