Prepostseo
Prepostseo bundles SEO, plagiarism checking, and AI writing tools like a humanizer. See 2026 pricing per tool and free-plan search limits.
About Prepostseo
What is Prepostseo (2026 update)
Prepostseo is an online toolbox site combining SEO utilities, a plagiarism checker, and AI-assisted writing tools such as a paraphraser, essay writer, and AI content humanizer. It targets students, writers, and small website owners who want several content and SEO checks in one place instead of separate subscriptions.
What is new in 2026
Prepostseo’s AI writing lineup now centers on a paragraph generator that can produce content in multiple tones (standard, descriptive, narrative, and persuasive) for articles, blogs, and reports, alongside its existing paraphrasing tool and essay writer. The platform’s humanizer tool analyzes written content and rewrites sentences that read as AI-generated, aimed at making text pass as more natural and readable.
On the SEO side, Prepostseo still bundles keyword research, backlink analysis, domain authority checking, website SEO score analysis, and sitemap generation, plus separate utilities for image editing, text conversion, coding, and unit conversion, all accessible from the same account.
Key features
- Plagiarism checker with deep search and an API for developers
- AI content detector and AI humanizer for reworking AI-sounding text
- Paraphrasing tool and multi-tone paragraph/essay generator
- SEO tools: keyword research, backlink analysis, domain authority checker, SEO score analysis, sitemap generator
- Utility tools for image editing, text conversion, coding helpers, and unit converters
- Free tier access to most tools with daily or per-scan word/search limits
Pricing in 2026
Prepostseo runs a freemium model where most tools are usable for free with limits, and specific tools like the plagiarism checker have their own separate paid plans rather than one all-in-one subscription. Free users can check up to 1,000 words per plagiarism scan (1,500 after registering), and free search-based tools allow around 500 queries per month for registered users versus 30 for anonymous visitors.
| Plan | Price | What you get |
|---|---|---|
| Free | Free | Most tools usable with limits: up to 1,000-1,500 words per plagiarism scan, around 500 search queries/month for registered users |
| Basic (Plagiarism Checker) | $10/month | 5,000 searches, deep search, captcha-free access, unlimited users, plagiarism API |
| Standard (Plagiarism Checker) | $20/month | 25,000 searches, deep search, captcha-free access, unlimited users, plagiarism API |
| Company (Plagiarism Checker) | $45/month | 75,000 searches, deep search, captcha-free access, unlimited users, plagiarism API, 24/7 support |
Who should use it
Prepostseo fits students, freelance writers, and small website owners who need occasional plagiarism checks, quick SEO metrics, or an AI humanizer pass on drafted content, and who are fine with a free tier that covers light, infrequent use. The Basic or Standard plagiarism checker plans suit teachers, editors, or content agencies checking many documents monthly and needing API access or higher search volume. It is a weaker fit for larger content teams that need a single unified dashboard and one flat subscription, since Prepostseo prices some of its flagship tools like plagiarism checking separately from the rest of the site, and it is not built to replace a dedicated SEO platform for competitive keyword or backlink strategy work.
Limitations and alternatives
Because pricing is split by tool rather than one platform-wide plan, total cost can be unclear if you need both SEO tools and heavy plagiarism checking, check the official site for current plan bundles and search limits before committing. The free tier’s word and search caps are relatively low for anyone processing long documents regularly, and results from a humanizer or AI detector tool should still be spot-checked manually since automated AI-text detection is not perfectly reliable on any platform.
Real alternatives include Copyscape for a plagiarism-checking-only tool with a pay-as-you-go model, Grammarly for AI writing and grammar checking with a simpler flat subscription, and Ahrefs or Semrush for more advanced, dedicated SEO analysis.
Frequently asked questions
Is Prepostseo free to use?
Yes, most tools including SEO checks and a limited plagiarism scan (up to 1,500 words after registering) are free, with paid plans unlocking higher limits and API access.
How much does Prepostseo's plagiarism checker cost?
Paid plagiarism checker plans start at $10/month for 5,000 searches, going up to $45/month for 75,000 searches with API access and 24/7 support.
Does Prepostseo have an AI humanizer?
Yes, its humanizer tool analyzes content and rewrites sentences that read as AI-generated to make text sound more natural.
Does Prepostseo offer SEO tools beyond plagiarism checking?
Yes, it includes keyword research, backlink analysis, domain authority checking, website SEO score analysis, and sitemap generation alongside its writing and plagiarism tools.
Information last verified: September 2026.
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