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Clean Japanese text before sending it to an LLM

Normalizes messy Japanese text so that an LLM, a search index or an embedding model sees one consistent form: full-width letters and digits become half-width, half-width katakana becomes full-width, dashes and long vowel marks are unified, invisible characters and letter-spaced text are cleaned. URLs, e-mail addresses and fenced code are kept as they are. Paste your texts or choose a dataset.

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Japanese Text Normalizer & RAG Chunker
Japanese Text Normalizer & RAG Chunkerquietworkslab/japanese-text-normalizer
Document index
Chunk index
Characters
Text
+1 field
Text
Number
Boolean
List
Object

Input

Texts:AI活用ガイド(2026年版) カスタマーサポートへの問い合わせは前年より12%増えました。詳細は https://example.com/report をご覧ください。+1

Output fields

Document index
Chunk index
Characters
Text
Metadata

How it works

Sign up on Apify or log in

The Japanese Text Normalizer & RAG Chunker Actor is ready to run with the inputs already set for "Clean Japanese text before sending it to an LLM". Sign up or log in and you'll land in Apify Console with a copy of this exact task.

Start the "Clean Japanese text before sending it to an LLM" task

The Japanese Text Normalizer & RAG Chunker Actor will start running based on the input automatically. You can also change all the input fields, like texts, to match your specific use case.

Receive the "Clean Japanese text before sending it to an LLM" output

Monitor the progress in real time. You will be notified as soon as your dataset is complete and ready for review. Each result includes data such as document index, chunk index, characters, and more.

Integrate into your workflow

The final output is delivered in JSON, CSV, or Excel format, ready to be plugged into your workflow. You can also run the "Clean Japanese text before sending it to an LLM" task via API.

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Integrate "Clean Japanese text before sending it to an LLM" into your workflow

Connect "Clean Japanese text before sending it to an LLM" with 100+ integrations, or run it via API or MCP.

Webhook

Webhook

n8n

n8n

Make

Make

Zapier

Zapier

Airbyte

Airbyte

Keboola

Keboola

IFTTT

IFTTT

Hubspot

Hubspot

GDrive

GDrive

Gmail

Gmail

Apify MCP

Apify MCP

GitHub

GitHub

Slack

Slack

LangChain

LangChain

LlamaIndex

LlamaIndex

Flowise

Flowise

Pinecone

Pinecone

OpenAI

OpenAI

Mastra

Mastra

Clay

Clay

Frequently asked questions

The Japanese text cleaning task turns full-width letters and digits into half-width and half-width katakana into full-width, unifies dashes and long vowel marks, removes invisible characters and joins letter-spaced words. NFKC is used only if chosen.

No. The Japanese text cleaning task keeps URLs, e-mail addresses and fenced code blocks unchanged, so links and code stay usable.

The Japanese Text Normalizer charges $0.0001 per 1,000 characters of input ($0.10 per million), counting each document as at least 100 characters, plus Apify's Actor start event.