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How to Use AI to Summarize, Rewrite & Fix Documents

By DocFila Team · March 24, 2026 · 6 min read

You receive a 30-page contract. You need to understand the key terms in 5 minutes. Or you have written an important email but want to make sure the tone is professional and the grammar is flawless. Or you have scanned a document in French and need it in English. AI-powered document tools handle all of these scenarios in seconds — directly from your phone.

DocFila's AI Document Tools

DocFila integrates AI tools that work on any document you scan, import, or create. Here is what each tool does and when to use it.

AI Summarize

The summarize tool condenses long documents into concise summaries. It extracts the key points, main arguments, and critical data — and presents them in a fraction of the original length.

When to use it:

• Reading contracts or legal documents — get the key terms without reading 30 pages
• Research papers — understand the findings before deciding if the full paper is worth reading
• Meeting notes — extract action items and decisions from lengthy transcripts
• Reports — get the executive summary when the document does not provide one
• Scanned documents — scan a physical document, run OCR, then summarize the extracted text

How to use it:

1. Open or scan a document in DocFila
2. Tap the AI tools button (or select text you want to summarize)
3. Choose "Summarize"
4. The AI generates a concise summary. Choose between a short summary (1–2 paragraphs) or a detailed summary with key points
5. Copy the summary, save it as a note, or share it

AI Rewrite

The rewrite tool rephrases text to improve clarity, adjust tone, or simplify complex language — while keeping the original meaning intact.

When to use it:

• Emails — rewrite a draft to sound more professional, polite, or concise
• Cover letters — improve phrasing without losing your personal voice
• Business proposals — make technical content accessible to non-technical stakeholders
• Social media — adapt formal content into a conversational tone
• Simplification — convert jargon-heavy text into plain language that anyone can understand

How to use it:

1. Select the text you want to rewrite (or apply to the entire document)
2. Tap "Rewrite" from the AI tools menu
3. Choose a tone: Professional, Casual, Simplified, Formal, or Creative
4. Review the rewritten version side-by-side with the original
5. Accept the changes, edit further, or try a different tone

AI Grammar & Spelling Check

The grammar tool scans your text for errors and suggests corrections. It catches mistakes that basic spell-checkers miss — subject-verb agreement, comma splices, misused words, passive voice overuse, and inconsistent tense.

When to use it:

• Before sending any important document — contracts, proposals, reports
• Resumes and cover letters — a single typo can cost you an interview
• Academic papers — ensure formal writing standards are met
• Non-native English writing — the AI catches errors that are common among ESL speakers

How to use it:

1. Open your document in DocFila
2. Tap "Grammar Check" from the AI tools menu
3. The AI highlights errors with explanations of why each is incorrect
4. Accept individual corrections or apply all fixes at once

AI Translate

Translate documents or selected text between languages instantly. DocFila supports dozens of languages, and the AI handles context, idioms, and technical terminology better than word-for-word translation tools. For a detailed guide, see our document translation article.

Text-to-Speech (Read Aloud)

Have DocFila read any document aloud. This is useful for:

• Proofreading — hearing your text read back helps catch errors your eyes miss
• Accessibility — makes documents available to users with visual impairments
• Multitasking — listen to a document while commuting, cooking, or exercising
• Language learning — hear the pronunciation of text in foreign languages

Real-World Workflows

The Lawyer

Receive a 40-page contract from opposing counsel. Scan it with DocFila, run OCR, then use AI Summarize to extract the key clauses in 30 seconds. Flag sections that need attention and share the summary with your client.

The Student

Scan lecture handouts, run OCR to make them searchable, then use AI Summarize to create study notes. Use AI Rewrite to simplify complex passages into plain language. Use Text-to-Speech to review notes while walking to class.

The Freelancer

Write a project proposal, run Grammar Check to catch errors, then use AI Rewrite to adjust the tone from casual to professional before sending to a corporate client.

The Immigrant

Receive official documents in a foreign language. Scan them with DocFila, run OCR, then translate to understand the content. Use AI Summarize to extract the key requirements and deadlines.

Tips for Getting the Best AI Results

1. Clean input, better output. If you are working with a scanned document, ensure the scan is clear and the OCR text is accurate before running AI tools.
2. Be specific with rewrites. Choosing the right tone (Professional vs. Casual) dramatically changes the output. Experiment with different tones to find the best fit.
3. Always review AI output. AI is a tool, not a replacement for human judgment. Review summaries for accuracy, rewrites for nuance, and grammar corrections for context.
4. Combine tools. Scan → OCR → Summarize → Translate is a powerful chain. Each tool builds on the previous one's output.
5. Use on sections, not just full documents. You can select specific paragraphs or sections to process, which often gives better results than processing an entire long document at once.

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