# Grammarly vs TopPDF

Grammarly records 58,867,412 monthly visits with -1.5% month-over-month growth and Freemium pricing. TopPDF records 643 monthly visits with -90.6% growth and Freemium pricing.

| Metric | [Grammarly](https://openaitools.app/tool/grammarly) | [TopPDF](https://openaitools.app/tool/toppdf) |
| :--- | :--- | :--- |
| Website URL | https://www.grammarly.com | https://www.toppdf.co |
| Categories | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Text Generator | AI PDF, AI PDF Editor, AI Translate, AI Grammar Checker |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 58,867,412 | 643 |
| MoM Growth Rate | -1.5% | -90.6% |
| Primary Market | United States | Global |
| Direct Visits | 25,398,749 | 230 |
| Review Score | 4.4 | 3.9 |
| Saved Count | 74 | 1 |
| Supported Platforms | Website | Website |

## Grammarly

Grammarly is the world's most widely deployed AI writing and communication platform, trusted by more than 40 million daily users and 50,000 organizations including Atlassian, Databricks, and Zoom. Operating as a persistent overlay across over 500,000 web applications, desktop programs (Windows and macOS), Microsoft Office, Google Docs, and iOS/Android keyboards, Grammarly analyzes text in real time to eliminate grammatical errors, streamline wordy phrasing, and calibrate tone to match the writer's intent. Following its corporate evolution under the Superhuman Platform umbrella alongside Superhuman Mail and Coda, Grammarly has expanded from a personal proofreader into an enterprise-grade proactive AI communication suite.

In 2026, Grammarly goes well beyond red-underline spellchecking with a suite of specialized AI Agents and document integrity tools. Writers can invoke purpose-built agents—including AI Grader, Citation Finder, Reader Reactions, and Paraphraser—alongside generative AI drafting directly inline where they work. To address academic and professional transparency in the generative AI era, Grammarly offers built-in Plagiarism Detection, an AI Detector, and Grammarly Authorship, which tracks how a document was constructed by automatically categorizing text as human-typed, pasted from external sources, or generated/modified with AI. For teams, Grammarly enforces organizational consistency through custom Style Guides, Brand Tones, reusable Snippets, and Knowledge Share.

Grammarly simplified its subscription structure by consolidating its legacy individual 'Premium' and team 'Business' offerings into a single unified tier: Grammarly Pro. The Free plan ($0/month) covers essential spelling, punctuation, basic tone visibility, and 100 generative AI prompts per month. Grammarly Pro is priced at $12/member/month when billed annually ($144/year) or $30/member/month when billed monthly ($60 quarterly), unlocking unlimited personalized fluency suggestions, full-sentence rewrites, tone adjustment, citation formatting, plagiarism and AI detection, 1 team style guide, and 2,000 generative AI prompts per member each month. Large organizations opt for Grammarly Enterprise (available with Superhuman Go) for unlimited AI prompts, SAML SSO, SCIM provisioning, Data Loss Prevention (DLP), and Bring Your Own Key (BYOK) encryption.

**Pricing & Plans:** Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security.

- **Ubiquitous Inline Rewriting & Tone Calibration:** Works natively inside Chrome, Safari, Firefox, Edge, Windows, Mac, Google Docs, MS Office, and mobile keyboards to flag grammar mistakes, rewrite tangled sentences, and shift tone toward confident, empathetic, or executive registers.
- **Specialized AI Agents (AI Grader, Citation Finder & Reader Reactions):** Deploys contextual AI agents that predict how a target audience will react to a draft, locate credible supporting citations, grade essays against rubric criteria, and generate drafts using up to 2,000 monthly prompts on Pro.
- **Grammarly Authorship, AI Detector & Plagiarism Checker:** Scans text against billions of web pages and academic databases for accidental plagiarism, detects AI-generated passages, and logs transparent document provenance via Authorship reports in Google Docs and Word.
- **Team Style Guides, Brand Tones & Knowledge Share:** Enables teams on Pro and Enterprise plans to codify company terminology, ban deprecated jargon, enforce inclusive language, insert shared Snippets, and surface internal company definitions inline.
- **Enterprise Security, DLP & Superhuman Platform Governance:** Protects organizational data with SOC 2 Type 2 attestation, SAML SSO, SCIM lifecycle management, Confidential Mode, Data Loss Prevention controls, Audit Logs API, and customer-managed BYOK encryption.

**Strengths:** Frictionless cross-platform integration works inside virtually every browser, desktop app, email client, and mobile OS without copy-pasting into a separate chatbot.; Consolidating Premium and Business into Grammarly Pro ($12/member/month annual) gives individuals and small teams access to style guides, analytics, and plagiarism/AI detection in one plan.; Grammarly Authorship provides a constructive, transparent audit trail for students and writers to demonstrate human writing integrity alongside responsible AI editing.; Mature enterprise security posture featuring BYOK encryption, Data Loss Prevention, and granular application/domain blocklists.

**Limitations:** Month-to-month billing on Grammarly Pro is steep at $30/member/month compared to the $12/member/month annual commitment ($144 billed upfront).; Core writing intelligence and style rules remain primarily optimized for English dialects (US, UK, Canadian, Australian, Indian) rather than native multilingual grammar checking.; Aggressive inline underlines and pop-up agent cards can feel visually intrusive in dense technical documents or code-heavy web editors unless muted per domain.

[Profile (Markdown)](https://openaitools.app/tool/grammarly.md)

## TopPDF

TopPDF is a browser-based toolbox that concentrates the document tasks people do most often into one place. You can edit text and images inside a PDF, translate a document while trying to keep its layout, compress files for easier sharing, merge several PDFs into one, or split a large file into smaller pieces. A converter handles two-way movement between PDF and Word, Excel, PowerPoint and JPG, with EPUB to PDF on the import side as well.

Beyond conversion, the platform adds light AI writing help: a grammar checker that detects grammatical and spelling issues across multiple languages, and a paraphrasing tool for rewriting passages quickly. OCR support means scanned or image-based documents can be turned into searchable, editable files, which is often the deciding factor for anyone working with older or printed material.

TopPDF says it is used by more than 8 million people and has processed over 150 million PDFs, and the interface is offered in a wide range of languages. Access is freemium: the core utilities can be tried without an account, while a subscription unlocks larger files and more advanced editing. Because pricing is presented inside the product rather than on a public page, it is worth checking current plans in the app before committing.

**Pricing & Plans:** Freemium. Core PDF tools such as editing, conversion and compression can be used for free with limits, while a paid subscription unlocks larger files, advanced editing and higher usage volumes. Exact plan prices are shown inside the product rather than on a public pricing page, so check the app for current tiers.

- **PDF editing and translation:** Modify text and images directly inside a PDF and translate document content into many languages while keeping the original page layout intact.
- **Compress, merge and split:** Shrink, merge and split PDFs so large documents are easier to store, share and organise, with compression that aims to preserve visible quality.
- **Two-way format conversion:** Convert PDFs to Word, Excel, PowerPoint and JPG, and convert Word, Excel, PowerPoint, JPG and EPUB back into PDF.
- **AI grammar checker and paraphraser:** An AI grammar checker that finds grammatical errors and spelling mistakes across multiple languages, plus a paraphrasing tool for fast rewriting.
- **OCR for scans:** OCR support turns scanned or image-based documents into editable, searchable formats so printed material can be reused digitally.

**Strengths:** Wide all-in-one toolkit covering editing, conversion, compression and translation; Two-way conversion between PDF and Word, Excel, PowerPoint and JPG; Multi-language interface and a PDF translator covering many languages; OCR makes scanned and image-based documents editable

**Limitations:** Some advanced features and larger files sit behind a paid subscription; No visible pricing page makes cost comparison harder before signing up; Heavy PDFs with complex layouts may still need manual fixes after conversion; Site language switcher covers many languages but the interface focus is document conversion rather than a wider productivity suite

[Profile (Markdown)](https://openaitools.app/tool/toppdf.md)

## Frequently Asked Questions

### How do Grammarly and TopPDF compare in monthly traffic?

Grammarly has 58,867,412 monthly visits, while TopPDF has 643. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Grammarly has a month-over-month growth rate of -1.5%; TopPDF has -90.6%.

### How does pricing compare?

Grammarly: Freemium. Free plan ($0/month) includes core grammar and spelling checks, tone detection, and 100 generative AI prompts/month; Grammarly Pro costs $12/member/month billed annually ($144/year, or $30/month billed monthly) with full-sentence rewrites, plagiarism/AI detection, team style guides, and 2,000 AI prompts/month, while Enterprise offers custom pricing with unlimited AI prompts and BYOK security. TopPDF: Freemium. Freemium. Core PDF tools such as editing, conversion and compression can be used for free with limits, while a paid subscription unlocks larger files, advanced editing and higher usage volumes. Exact plan prices are shown inside the product rather than on a public pricing page, so check the app for current tiers.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Outstanding for context-aware translation and professional writing refinement, but not designed as a dedicated grammar checker. | [.md](https://openaitools.app/tool/deepl.md) |
| 2 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Excels at heavy paraphrasing and text rewriting, but offers less seamless inline real-time proofreading across all apps. | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) |
| 3 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | Provides strong multilingual grammar and style checking across apps, but offers fewer advanced generative AI features. | [.md](https://openaitools.app/tool/languagetool.md) |
| 4 | [Image to Text](https://openaitools.app/tool/image-to-text-converter) | 4,871,767 | +0.8% | Freemium | Free online OCR that turns any image into editable text in seconds | [.md](https://openaitools.app/tool/image-to-text-converter.md) |
| 5 | [PDFgear](https://openaitools.app/tool/pdfgear) | 2,845,280 | -3.4% | Free | A free, AI-powered PDF editor for every device | [.md](https://openaitools.app/tool/pdfgear.md) |
| 6 | [PDNob PDF Editor](https://openaitools.app/tool/pdnob-pdf-editor) | 2,376,518 | +1.2% | Freemium, Free Trial, Paid | AI-powered PDF editor for Windows, Mac and iOS | [.md](https://openaitools.app/tool/pdnob-pdf-editor.md) |
| 7 | [LightPDF](https://openaitools.app/tool/lightpdf-com) | 1,742,568 | -15.3% | Freemium | Free AI-powered PDF editor, converter and reader for every device | [.md](https://openaitools.app/tool/lightpdf-com.md) |
| 8 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | Delivers deeper manuscript analysis and structural reports, but has a steeper learning curve than Grammarly. | [.md](https://openaitools.app/tool/prowritingaid-com.md) |
| 9 | [OpenL Translate](https://openaitools.app/tool/openl) | 1,470,643 | +8.8% | Freemium, Subscription | AI translation for text, images, documents and speech in 100+ languages | [.md](https://openaitools.app/tool/openl.md) |
| 10 | [Paperpal](https://openaitools.app/tool/paperpal) | 1,111,641 | +1.7% | Freemium | AI academic writing assistant that edits, cites, and checks your manuscript right where you write | [.md](https://openaitools.app/tool/paperpal.md) |

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Source: https://openaitools.app/compare/grammarly-vs-toppdf

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