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Mojisuu Character Counter
Count Japanese text characters, lines, paragraphs, manuscript pages, and byte length in real time.
DR54Productivity
About Mojisuu Character Counter
Mojisuu Character Counter is a free browser-based tool for counting Japanese text. Users paste or type text and instantly see character counts with and without spaces, line and paragraph counts, 400-character manuscript page estimates, and UTF-8 and Shift_JIS byte lengths. The text is processed locally in the browser and is not uploaded to a server, and no account is needed.
- Who it is for
- Japanese writers, editors and students who need to check a character limit, line and paragraph counts, or byte length before submitting their work.
- Problem it solves
- Japanese text is written without word spacing, so word-based counters and editors that show only a rough length make it hard to confirm a character limit, and pasting a draft into an online counter may upload it to a server.
- The solution
- Pasted text is counted in real time with and without spaces, alongside line count, paragraph count, 400-character manuscript page estimates and both UTF-8 and Shift_JIS byte lengths, so a submission limit can be checked in one place.
- What makes it unique
- Counting runs in the browser and the text is not uploaded to a server, so a draft can be checked without sending it anywhere, and manuscript-page conversion and Shift_JIS bytes are shown together with the usual character count.
Features
Count Japanese characters with and without spaces
Count lines and paragraphs in real time
Estimate 400-character manuscript pages
Show UTF-8 and Shift_JIS byte lengths
Details
- Platforms
- Web
- Pricing
- Free
- Built for
Japanese writers, editors and students who need to check a character limit, line and paragraph counts, or byte length before submitting their work.
- Building since
2026
Technology
Homepage of mojisuu.app
1 / 1Website performance
Independent mobile lab measurements and permanent weekly competition results from IndieTools Speed.
100ExcellentMobile Lighthouse
Last checked
- Load time
- 485 ms
- FCP
- 1.05 s
- LCP
- 1.35 s
- CLS
- 0.000
- TTFB
- 4 ms
- TBT
- 0 ms
- Speed index
- 1.05 s
Latest Performance Score: 100. Measured: September 28, 2026. Weekly Overall Rank: not finalized. LCP: 1.35 s. Load Time: 485 ms.
- Overall rank
- Not finalized
- Best overall rank
- Not finalized 0 top 10 finishes
- Best category rank
- Not finalized 0 category wins
- Latest change
- 63 ms faster No finalized score yet
Website performance history
Inspect every successful mobile Lighthouse lab measurement by metric and date range.
Range
Metric
Latest score
100 / 100
Higher is better
3 measurements
Use the left and right arrow keys to inspect measurements. Use Home or End to jump to the first or last measurement. Press Escape to dismiss the chart tooltip.
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