Local AI Text Summarizer

Q: Is my text uploaded to a summarization API?

No. The model, prompts, summaries, and storage run in your browser. BaseToolbox does not receive the text.

Q: Can it summarize long documents?

It can process long pasted text, TXT, and Markdown within the displayed device limit by using stable map-and-reduce chunks. PDF extraction remains a separate existing tool.

Q: What do source references mean?

Each S-number points to an exact character range from the saved source. The parser rejects references to segments that were never supplied to the model.

Q: Does refreshing download the model again?

Normally no. Verified weights are cached by model version and reused after refresh; the runtime instance and context are rebuilt from local storage.

Summarize pasted text, TXT, or Markdown entirely in your browser. Choose brief, detailed, bullet, key-point, or action-item modes and inspect the exact source segments cited by the result.

Saved sessions

463 / 1000000

Brief summary

463 characters

1 source segments

Local AI runtime

Checking this device

BackendWASM

Device profile—

Adaptive limits—

Writing model

Qwen 0.5B · standard

Transcription model

Whisper Tiny · fast

Files, prompts, and results stay in this browser. Browser storage can still be cleared by you, private mode, or browser cleanup.

Private local summarization

Your source, prompts, chunk summaries, final summary, and references remain in local browser storage. The content is not uploaded or included in analytics.

Current limitations

Local models can omit nuance or misunderstand ambiguous language; source references make review easier but do not guarantee factual completeness.
Long sources are summarized in deterministic chunks and then reduced, so cross-section context may be less precise than in a much larger model.
Action-item mode reports explicit tasks only and must not invent an owner or date.
Model weights are normally cached across refreshes, but clearing site data, private browsing, or browser eviction can require another download.

How the local text summarizer works

Import or paste text

The source is normalized and split at stable sentence boundaries that fit the current device profile.

Summarize each source segment

The single global local model summarizes bounded segments and must cite only the source ID it received.

Combine and verify references

Partial summaries are reduced locally, invented source IDs are rejected, and the result can be exported as Markdown or TXT.

Local text summarizer FAQ

Is my text uploaded to a summarization API?

Can it summarize long documents?

What do source references mean?

Does refreshing download the model again?

Create structured meeting notes Generate a longer evidence-aware report

How the local text summarizer works

Import or paste text

The source is normalized and split at stable sentence boundaries that fit the current device profile.

Summarize each source segment

The single global local model summarizes bounded segments and must cite only the source ID it received.

Combine and verify references

Partial summaries are reduced locally, invented source IDs are rejected, and the result can be exported as Markdown or TXT.

How the local text summarizer works

Import or paste text

Summarize each source segment

Combine and verify references

Local text summarizer FAQ

Related writing tools

How the local text summarizer works

Import or paste text

Summarize each source segment

Combine and verify references

Local text summarizer FAQ

Related writing tools