A local-first manga & comic reader
Read your own manga. Sharpen it. Keep it on your device.
LocalUpScale opens your own .cbz, .cbr,.zip archives and image folders right in your browser. It reads the way you like, fixes tiny text and blurry scans with on-device models, and never uploads a single file. No install, no account, works offline.
What this is
A reader that lives on your device, not on a server
LocalUpScale is a local-first manga and comic reader. It runs entirely in your browser: you open your own files, read them, and enhance them — all on your hardware. Nothing is uploaded, there is no account, and it keeps working offline.
- Runs inyour browser
- Uploadsnothing
- Worksoffline
Who it's for
Built for people who own their manga
Three reasons someone opens LocalUpScale. You probably match at least one.
You already own the files
You have .cbz, .cbr, .zip archives or image folders. Get a reader that opens them directly, remembers where you left off, and works on any screen — without converting your library to someone else's format.
Your scans are blurry
Tiny dialogue and soft, low-res scans make reading a chore. On-device models enlarge the text and re-draw the art so each page reads the way it should.
You want privacy
You'd rather not hand your collection to a server. Everything stays on your device — no account, no tracking, no upload, even offline.
The problem
The usual options make you give something up
Whether it is a dedicated app or a reader website, reading your own manga usually means trading away control.
Installing their software
An app per device, your library converted to their format, a different view every time you switch. You read inside their walls.
Handing over your collection
Your library lives on their servers. If the site changes, throttles, or shuts down, your history and follows go with it.
Logging in, tracking, paying
Accounts, trackers and paywalls become the price of a free reader. Some sites even cap how much guests can read.
Blurry stays blurry
Tiny dialogue and soft scans are the whole point of reading, and most readers leave them exactly that way.
What you can do
Everything, on your device
A single reader for your library, plus the tools to make each page read the way it should.
Open your own files
Drop a .cbz, .cbr, .zip or an image folder. It is read in browser memory — nothing leaves your device.
Read your way
Tap or scroll, right-to-left or left-to-right, double page on desktop. Brightness, contrast, fullscreen, jump-to-page — it remembers where you stopped.
Fix blurry art
On-device models re-draw soft scans, sharpening lines and halftones on your own hardware. One page at a time, or a whole volume.
Enlarge tiny text
Detects dialogue and magnifies it so speech reads like it was typeset for your screen — one tap.
Batch a whole manga
Run the upscaler over an entire archive, then download the enhanced pages as a ZIP or folder.
Keep a real library
Covers, reading positions, status (reading / dropped / completed), bookmarks and stats — all saved on your device.
How it works
Three steps, all on your device
No account, no install, no upload — the whole loop runs on your hardware.
Bring your files
Drop a .cbz, .cbr, .zip or an image folder. It is read in browser memory — nothing leaves your device, and it is yours to keep.
Read your way
Tap or scroll, fit to your thumb, on phone or desktop. It remembers where you stopped, so the flow never breaks.
Fix it on-device
Models sharpen blurry art and enlarge tiny dialogue — free, one page or a whole volume at once, fully offline.
See it in action
The reader, live on your device
Real captures from the app — flip between raw pages, upscaled art, and enlarged dialogue.
Before
After (Upscaled)A real page, enhanced on your own device — no upload, no wait.
Your manga. Your device. One place to read.
Open your first archive and read the way it should — nothing to install, nothing uploaded, nothing in the way.
Start reading