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Mojisuu Character Counter
Mojisuu Character Counter — Count Japanese text characters, lines, paragraphs, manuscript pages, and byte length in real time.
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.
99ExcellentMobile Lighthouse
Last checked
- Load time
- 2.20 s
- FCP
- 1.05 s
- LCP
- 1.50 s
- CLS
- 0.000
- TTFB
- 22 ms
- TBT
- 4 ms
- Speed index
- 3.40 s
Latest Performance Score: 99. Measured: October 16, 2026. Weekly Overall Rank: #73. Category Rank: #19 in Productivity. LCP: 1.50 s. Load Time: 2.20 s.
- Overall rank · 2026-W41
- #73 Down 52 places
- Best overall rank
- #21 0 top 10 finishes
- Best category rank
- #2 0 category wins
- Latest change
- +14 score Best score 100 / 100
Website performance history
Inspect every successful mobile Lighthouse lab measurement by metric and date range.
Range
Metric
Latest score
99 / 100
Higher is better
9 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.
Oct 9, 2026Oct 16, 2026Weekly rank history
Track the product's finalized overall position on the IndieTools Speed leaderboard.
Range
MetricOverall rank
Latest rank
#73
Closer to #1 is better
2 weeks
Use the left and right arrow keys to inspect weeks. Use Home or End to jump to the first or last week. Press Escape to dismiss the chart tooltip.
Sep 28, 2026Oct 5, 2026Related products
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