Other manga translator apps copy the whole chapter to their servers before you can read a single page. Sumi translates the page you already have open, in your own browser, as you read.
Before page 1: the whole chapter
Pages behind a login often can’t be fetched at all
Before page 1: a few seconds*
Works on pages you’re signed in to, because it translates what your browser already shows
*Most pages take 3–5 seconds to translate on our side. Your connection adds to that — on a slow or high-latency network, pages take longer.
On your phone or on your computer, Sumi works inside the browser you already read in.
Open the manga site inside the app, tap the Sumi ball, and the page is translated where it is. Switch on Auto and every page you turn to follows. Prefer Safari? The same ball comes as a Safari extension.
01Type or paste the link, or pick a bookmark — Jump+, MANGA Plus, WEBTOON and more.
02The ball in the corner translates the page you’re on, balloons re-lettered in your language.
03Flip the switch under the ball and keep reading — each page translates itself.
Drop in a page you own and watch the original text vanish and your language get re-lettered into the art. Sign up later for 5 more free pages.
Sumi erases the original text and re-typesets your language right into the artwork — true vertical CJK included. It can run fully offline on your iPhone or iPad, with models you choose.
Original text is erased from the artwork and re-typeset in place — no white boxes pasted over the panel. This comparison is straight out of Sumi, untouched.
Tall speech bubbles get true vertical Japanese, Chinese, and Korean — read top to bottom, like the original — not horizontal text wedged in sideways.
Read whole chapters in the app on every Apple device. Import a PDF, ZIP, CBZ or EPUB and Sumi finds, reads, translates and erases the text, then re-letters your language into the art — one library, one balance across iPhone, iPad and Mac.
The publisher-run sites we run against, and every language Sumi can write back into the art. Both counts are read off the lists the product itself uses.
Tested by us, page by page — never a promise that every site works forever. See the full list
If the text is drawn into the picture, Sumi can read it. Here is what that means for the four things people actually come here for.
Japanese chapters that never got an official English release, or that are months ahead of the one that did. Sumi keeps vertical Japanese vertical instead of rotating it into a sideways mess, and leaves the artwork alone.
Korean webtoons are one tall strip, not pages, and the bubbles drift far apart. Sumi follows the scroll instead of asking you to feed it one screenshot at a time, and keeps the colour under the lettering it erases.
Chinese series, read left-to-right, usually in colour, often with text baked into the background art rather than a clean bubble. Those are the panels Sumi flags rather than guessing at.
Self-published work almost never gets translated at all. Sumi handles the handwriting-heavy pages the same way — read the bubble, erase it, letter your language back in.
One subscription covers the online translator and the Chrome extension. Cancel anytime — you keep access through the period you paid for.
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Best for one reader keeping up with a few series.
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Best for binge readers working through a back catalogue.
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Best for scanlation groups translating every day.
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Quality & support
Usually in a few seconds. Sumi translates the page you already have open instead of downloading the whole chapter first, so there is no wait before you start reading. Most pages take 3–5 seconds to translate on our side; your connection adds to that, and a slow or high-latency network makes it longer. With Auto on, each page translates as you turn to it.
No. Open the chapter where you normally read it and tap Sumi — in the Sumi app, the Safari extension or the Chrome extension. Sumi translates the images already on the page, so there is no link to paste, no file to import and no chapter to wait for. Uploading is only for pages you already have as files, like a page a friend sent you.
Yes. Sumi works inside your own browser, so it translates the page exactly as you see it, while you are signed in. Apps that fetch the chapter to their own servers usually cannot get past a login. Sumi only translates the page you opened; your account on that site stays between you and the site.
You can translate one page free with no account. A free account adds 5 more, and 5 more again every day you claim them. After that Sumi Pro is $6.99 a month, with a fair-use ceiling of 1,500 pages per billing month — about 21x what our heaviest reader uses, so normal reading never gets near it. Bigger plans go up to 12,000 pages a month. Going over does not cut you off — it falls back to any page balance you have.
Yes — Japanese manga, Korean manhwa, Chinese manhua, webtoons and comics. Sumi reads Japanese, Korean and Chinese source text.
No. The web translator runs in your browser with no account and no download. There are also Chrome and Safari extensions that translate the page you are already reading, and an app for iPhone, iPad and Mac.
Any page you open yourself. We run against 30 official publisher platforms — Shonen Jump+, MANGA Plus, Comic Walker and more — and the extension translates the images already on the page. Sumi does not host, index, crawl or link to manga.
On iPhone and iPad, yes. Download the model pack once and Sumi finds, reads, translates and erases text entirely on device, so nothing leaves your device. The web translator and the browser extensions need a connection.
No. Sumi erases the original lettering and re-typesets the translation inside the same speech bubble, so the page still reads like a page. You can flip back to the original at any time.
134 languages, including English, Spanish, French, Portuguese, German, Italian, Dutch, Simplified and Traditional Chinese, Korean, Japanese, Russian, Indonesian, Vietnamese, Arabic, Thai and Turkish.
Open the page you want to read, then drop it into the translator above or hit the Sumi button in the browser extension. It finds the speech bubbles, reads the Japanese, Korean or Chinese inside them, erases it, and re-letters English into the same bubble. The first page costs nothing and needs no account.
This one. One page free with no account at all, 5 more when you make a free account, and 5 more to claim every day after that. There is no trial clock and no card. Sumi Pro only matters once you are reading enough to pass the free daily pages.
Yes. Translate a page and hit Download translated page — you get a PNG at the original resolution with the translation lettered into the art, not a screenshot. Downloading needs a free account; translating does not.
Both. The web translator runs in any browser. There are Chrome and Safari extensions for the page you are already reading, and a Sumi app for iPhone, iPad and Mac that imports whole chapters and translates them offline. Sumi is also on Android (open testing on Google Play).
Yes. The same detector handles Western comics, bandes dessinées and webtoon panels — anything where the text sits inside the artwork rather than beside it. Sound effects and handwritten margin notes are the hard cases, and Sumi marks the ones it is unsure about instead of inventing a line.
That is exactly what the tool above does — one image at a time, translated in place. Use it as a manga image translator for a page someone sent you, a screenshot you took, or a panel you cannot read. Paste from the clipboard works too.
Lens reads text and shows you a translation; it does not know what a speech bubble is. It leaves the original lettering underneath, breaks on vertical Japanese, and cannot follow a page in reading order. Sumi erases the original, keeps vertical Japanese vertical, and re-letters inside the bubble so the page still reads like a page.
Yes — raw manhwa from Korean, raw manga from Japanese, manhua from Chinese. Open the raw chapter on the official platform that publishes it and translate the page in front of you. Sumi does not host, index or link to raw scans; it only translates a page you opened yourself.
Use chapters you have the right to read. Sumi only translates images on a page you open yourself — it does not host, index, crawl or link to manga, and it collects no browsing history.
Where to read a series legally, what the official platforms actually give you, and how to get through a raw chapter.
See the recorded results for four manga sites, with separate story screenshots, a GANMA original/translation pair and forward/return counts.
69 PASS, 1 FAIL, 40 BLOCKED: a visual manga-site reading test with a nine-state sequence, original/translation pairs and a breakdown of the results.
Shueisha's 100th-anniversary site gives away One Piece, Naruto, Death Note and ~400 more series free, no account, until end of 2027. What's on it, what the catch is, and how to read it in your language.
Try a page free right in your browser, no account needed — then 5 free pages when you sign up.
