Music and stories between order and noise

Image resize (Wasm compression)

Enter a width in px to resize images while keeping aspect ratio. Optional Wasm compression (MozJPEG, OxiPNG, optional lossy PNG as WebP). Max 10 files.

Drop images here or click to choose
JPG, PNG, WebP (max 10 files)
JPEG: re-encode with chosen quality. PNG: lossless OxiPNG by default. Check “Lossy PNG” below to export PNG inputs as lossy WebP for smaller files. First run downloads from a CDN (may take a few seconds).
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For PNG inputs only: encode with libwebp and download as .webp. Transparency is mostly preserved; not mathematically lossless. When off, PNG + OxiPNG (lossless) as before.
For PNG inputs only: reduce colors (palette) and save as PNG (PNG8-style). This is closer to TinyPNG’s “smaller PNG” approach. Photos/gradients may show banding.
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Result

Processing runs in your browser; images are never sent to the server.

Compression uses jSquash (MozJPEG / OxiPNG / WebP, Apache-2.0).

What's Bluepiece Lab?

AI music & fiction

Handy tools

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AI-powered Eiken study companion you want by your side
Character count

Real-time character, line, paragraph count
Wareki / Age

Japanese era ⇔ AD, age, zodiac
Academic history

School enrollment & graduation years
Romaji to Kanji

Type Japanese in romaji (for overseas users)
Hiragana to Hangul

Convert Japanese reading to Hangul (name use)
Unix time converter

Paste DB/API timestamp, get date. Both ways.
Day count

Pick start and end dates to see total days
JP holidays & rokuyō

Monthly calendar of Japanese national holidays and rokuyō (six-day cycle)
Password creator

Generate secure random passwords with letters, numbers, symbols
Fillable PDF Generator

Upload a PDF and add form fields
QR Code Generator

Create QR codes from URL or text instantly
JPG/PNG to WebP

Convert images to WebP, same name with .webp extension
WAV to MP3

Convert WAV to MP3 in browser, choose bitrate
Calculator

Basic math, decimals & keyboard (no eval)
Image resize

Resize by width, keep aspect ratio, batch up to 10

UTM Tag Generator

Create campaign URLs with UTM parameters
.htpasswd generator

Generate .htpasswd line from ID & password
Check your IP

See your public IP as soon as you open the page
Look up country from IP

Paste an IP to see country/region hints
Nameserver lookup

Enter a domain to list nameservers
Source diff (diff)

Compare two sources; added/removed lines in color