Offline by design
No uploads, no cloud queue. Your files never leave the disk.
Library · Content — content.html
Content.
Four content-heavy patterns for docs, guides and long-form pages — dense type, readable hierarchy and real code blocks. Primary element is e-content variant="editorial"; the other three are compositions of e-content + e-stats / e-table / e-points / e-faq.
01
Editorial · long-form guide
Guide · 6 min read
How to shrink a 20 MB portfolio without losing a pixel you care about
Most image weight is invisible — duplicate metadata, oversized dimensions and a quality setting left at 95. Compressy fixes all three locally, in one pass.
How to shrink a 20 MB portfolio without losing a pixel you care about
Most portfolios ship with images at 2× the displayed size and a quality setting left at 95. Dropping to Quality 85 with the balanced engine removes weight the eye won't miss, while Max W × H trims dimensions that never render.
What actually saves the most
Quality is the biggest dial. 85 is the default because it keeps text sharp while cutting photographs by ~26%. For screenshots with large flat areas, the lossless toggle keeps PNG bit-exact while still stripping metadata.
When to change the defaults
Leave Keep original on for archival work — WebP / AVIF as output makes sense when you control the delivery format. Turn Overwrite → backup folder on early — originals land in /backup next to each file before anything is replaced.
Scan first Drop a folder and note the header stats: folder size, avg saved preview and file count.
Slide quality 40–95, balanced / fast / maximum. Peak −41% on large photos at Quality 80.
Check dimensions Max W × H downscales without upscaling — keep aspect, off by default.
02
Docs · sidebar + code + code / callouts
Docs · Quick start
Quick start — Select, set, compress
Compressy is a single-window Windows utility. Pick a folder, tune four controls, run locally. No sign-up, no upload, no dashboard.
Quick start — Select, set, compress
On this page: Quick start · Quality & engine · Output format · Max width × height · Auto-rename · Backup & safety · CLI flags — the sticky TOC from content.html content-02. The docs pattern is a narrow prose column with mono callouts and a 240px TOC.
C:\Portfolio> compressy --quality 85 --engine balanced --keep-original C:\Pictures\Portfolio-2024
12 images · 18.4 MB → 14.2 MB · −22% · 00:08
Quality & engine — the two dials that matter. 85 · balanced is the default; fast trades a point for speed.
Output format — keep original or convert the whole batch to WebP / AVIF.
Max W × H — downscale only, keep aspect. Off by default.
Tip: leave Auto-rename {prefix}-{NNNN} off until you have confirmed the savings on a sample folder.
03
Explainer · dense comparison +
e-stats + e-table
Deep dive · Why local beats cloud
Smaller images, same workflow — without the upload
Cloud compressors add an upload, a queue and a download. Compressy removes all three. The comparison below is measured on the same 12-image portfolio (18.4 MB) on a mid-range Windows PC and a 20 Mbps connection.
Smaller images, same workflow — without the upload
Local processing−26% saved8s durationCloud queue avoided
CapabilityCompressyCloud tool
Works offline✓—
No upload step✓—
Batch 1,000 images✓ 5 minQueued
Private by defaultLocalServer
What to tell your team: if you ship images to the web, the win is not a trick — it is removing pixels and quality the user never sees. Compressy trims both in one pass and shows per-file savings so you can prove it before you ship.
04
Knowledge base · dense index +
e-faq / e-points
Knowledge base
Everything about Compressy, in one place
Twelve guides, one search. No video you have to watch — just text you can scan, copy and keep. The dense index from content.html content-04 is a 720px column with grouped links and a search bar.
Everything about Compressy, in one place
Getting started Quick start · Quality & engine · Output format · Max W×H
Formats JPEG mozjpeg · PNG oxipng · WebP · AVIF · Keep original
Safety Backup & overwrite · Auto-rename · Verify downloads (SHA-256)
Reference Changelog · System requirements · CLI flags · Offline guarantee
Can I use it offline?
Yes. No internet required after install.
Where are backups?
backup/ next to each file when overwriting.
Which flags exist?
--quality 40–95 --engine balanced|fast|maximum --format keep|webp|avif