# LightPDF vs Zeli LightPDF records 1,742,568 monthly visits with -15.3% month-over-month growth and Freemium pricing. Zeli records 56,147 monthly visits with -46.8% growth and Free pricing. | Metric | [LightPDF](https://openaitools.app/tool/lightpdf-com) | [Zeli](https://openaitools.app/tool/zeli) | | :--- | :--- | :--- | | Website URL | https://lightpdf.com | https://zeli.app | | Categories | AI PDF Editor, AI PDF, AI PDF Summarizer, AI OCR | AI Article Summarizer, AI Papers, AI News, AI Research Papers | | Pricing Model | Freemium | Free | | Monthly Visits | 1,742,568 | 56,147 | | MoM Growth Rate | -15.3% | -46.8% | | Primary Market | India | China | | Direct Visits | 442,074 | 39,950 | | Review Score | 4.2 | 4.3 | | Saved Count | 8 | 0 | | Supported Platforms | Website | Website | ## LightPDF LightPDF positions itself as an all-in-one document workspace rather than a single-purpose converter. The classic side of the product covers the essentials most people need every day: viewing and editing PDF text and images, converting between PDF and Office/image formats, OCR for scanned files, merging, splitting, compressing, watermarking, signing and annotating. Because everything runs in the browser with companion apps for Windows, Mac, iOS and Android, the same account and files travel with you across devices. The AI layer is where the product has expanded most. An AI agent lets you chat with an uploaded document, ask follow-up questions and trace answers back to citations, while a separate chat experience works on YouTube videos. Document translation preserves the original layout across 20+ languages, including scanned and image-based PDFs, and structured data extraction turns invoices, receipts, bank statements and purchase orders into editable spreadsheets. Rounding out the suite are an AI PPT generator, mind-map and summary generation, watermark and sticker removal, text and logo erasing, document enhancement for scanned pages and an AI invoice generator. Pricing follows a freemium model with a free tier (10MB file limit, watermark on some exports) and paid plans that add unlimited file sizes, batch processing, cloud storage and monthly AI credits. Individual subscriptions start around $5.99 per month, with a yearly option near $15.99 and a one-time lifetime plan; credits are consumed per AI action, so heavy AI users can top them up. Team, business and education plans are available on request. **Pricing & Plans:** Freemium. A free plan covers basic PDF tools with a 10MB file cap; paid plans start around $5.99/month, with a yearly tier and a one-time lifetime option. AI features consume monthly credits that differ by plan. - **AI document agent and chat:** Upload a PDF and ask questions in natural language, follow up on details and see which passages the answers came from. A separate chat mode works with YouTube videos. - **Layout-preserving translation:** Translate whole documents, including scanned and image-based PDFs, into 20+ languages while keeping the original formatting and layout intact. - **AI data extraction to spreadsheets:** Convert invoices, receipts, bank statements and purchase orders into structured, editable Excel files automatically. - **Full PDF editing and conversion suite:** Edit text and images, OCR scanned pages, convert to and from Office formats, then merge, split, compress, watermark, sign and annotate. - **Cross-platform access:** One account works on web, Windows, Mac, iOS and Android, so documents and paid features follow you between devices. **Strengths:** Very broad toolkit that covers both everyday PDF chores and advanced AI document tasks; Free tier is usable for light jobs, and the paid plans are cheaper than many competing PDF editors; Layout-preserving translation and AI data extraction handle scanned documents that trip up simpler tools; One subscription covers five platforms, including desktop and mobile apps **Limitations:** Free plan caps files at 10MB and adds watermarks on some outputs; AI features run on a credit system, so heavy usage means top-ups or a higher tier; Advanced AI operations like text editing or logo removal consume credits quickly [Profile (Markdown)](https://openaitools.app/tool/lightpdf-com.md) ## Zeli Zeli solves the oldest problem with Hacker News: the front page is a list of headlines, and deciding which of the thirty stories deserves your attention means opening all of them. Zeli mirrors that front page, attaches an AI-written summary and a representative key quote to each story, and translates everything into seven languages. The ranking tracks news.ycombinator.com and refreshes every fifteen minutes, so the feed stays current without you checking the orange site directly. The structure is built around permanent, citable pages. Every story gets a URL keyed to its Hacker News item id — zeli.app/story/{id} in English, or zeli.app/{lang}/story/{id} for the other languages — carrying the translated title, the original title, a summary, a key quote and translated highlights from the discussion. Every day also gets a permanent archive of the complete front page, so a digest can be retrieved after that day has scrolled away. Alongside the news feed, Zeli digests HuggingFace's daily AI papers with translated titles and summaries, which makes it useful for keeping up with research as well as with developer chatter. Content languages are English, Chinese, Japanese, Korean, German, Spanish and Russian, with English served at the root and no language prefix. There is no account, no API key and no cost; an RSS feed bundles one item per day instead of flooding your reader, and the site can be installed as a PWA. For programmatic use, Zeli also publishes plain-markdown daily digests, JSON endpoints and an RSS feed aimed at feeds and AI agents. It requires no JavaScript and is served from an edge cache, so it is unusually light to read. **Pricing & Plans:** Free. No account, no API key and no payment; the full site, the RSS feed and the machine-readable digests are all available at no cost. - **AI summaries on every Hacker News story:** Each story carries a short summary generated from the linked article plus a standout key quote, so you can judge relevance before clicking through. - **Seven-language translation:** The whole feed — titles, summaries and top comment highlights — is available in English, Chinese, Japanese, Korean, German, Spanish and Russian. - **Daily front-page archive:** Every day gets a permanent page containing every story that hit the front page, retrievable long after the feed has moved on. - **HuggingFace AI paper digests:** Daily AI papers are surfaced with translated titles and AI summaries, making Zeli a research reader as well as a news reader. - **Machine-readable outputs:** One-item-per-day RSS feeds, plain-markdown digests, JSON endpoints and a sitemap make Zeli easy to pipe into readers or AI agents. **Strengths:** Turns the Hacker News front page into a fast, scannable daily brief; Seven languages with genuinely translated titles, summaries and comment highlights; Permanent, citable story and daily archive pages that never expire; Free, no signup, no API key, installable as a PWA **Limitations:** Summaries are machine-generated and are not fact-checked by a human; Real summaries exist only in seven languages — other locales fall back to English; It covers Hacker News and HuggingFace papers only, not your own reading list or arbitrary URLs; Keys off Hacker News ranking, so niche topics that never hit the front page are not included [Profile (Markdown)](https://openaitools.app/tool/zeli.md) ## Frequently Asked Questions ### How do LightPDF and Zeli compare in monthly traffic? LightPDF has 1,742,568 monthly visits, while Zeli has 56,147. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? LightPDF has a month-over-month growth rate of -15.3%; Zeli has -46.8%. ### How does pricing compare? LightPDF: Freemium. Freemium. A free plan covers basic PDF tools with a 10MB file cap; paid plans start around $5.99/month, with a yearly tier and a one-time lifetime option. AI features consume monthly credits that differ by plan. Zeli: Free. Free. No account, no API key and no payment; the full site, the RSS feed and the machine-readable digests are all available at no cost. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) | | 2 | [Claude](https://openaitools.app/tool/claude-2) | 1,253,439,413 | +23.8% | Freemium | Anthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing. | [.md](https://openaitools.app/tool/claude-2.md) | | 3 | [DeepL](https://openaitools.app/tool/deepl) | 95,110,871 | -1.7% | Freemium | Enterprise-grade neural machine translation, AI writing refinement, and real-time voice translation across thirty-plus global languages. | [.md](https://openaitools.app/tool/deepl.md) | | 4 | [PDFgear](https://openaitools.app/tool/pdfgear) | 2,845,280 | -3.4% | Free | Offers a completely free PDF editing and AI assistant experience, but lacks some of LightPDF's cloud-native collaboration features. | [.md](https://openaitools.app/tool/pdfgear.md) | | 5 | [PDNob PDF Editor](https://openaitools.app/tool/pdnob-pdf-editor) | 2,376,518 | +1.2% | Freemium, Free Trial, Paid | Offers a robust desktop suite for OCR and editing, but requires software installation unlike cloud platforms. | [.md](https://openaitools.app/tool/pdnob-pdf-editor.md) | | 6 | [pdf.net](https://openaitools.app/tool/pdf-net) | 1,257,131 | -22.3% | Freemium, Free | Provides quick browser-based PDF editing and e-signatures, but has a less advanced conversational AI assistant. | [.md](https://openaitools.app/tool/pdf-net.md) | | 7 | [UPDF AI](https://openaitools.app/tool/updf-ai) | 1,050,387 | -7.2% | Freemium, Free Trial, Paid | Provides a more polished cross-platform desktop PDF editing suite, but requires a paid upgrade for full AI features. | [.md](https://openaitools.app/tool/updf-ai.md) | | 8 | [ChatPDF](https://openaitools.app/tool/chatpdf) | 1,044,477 | -3.7% | Freemium | Offers a streamlined conversational interface for querying PDFs, but provides fewer document editing and conversion utilities. | [.md](https://openaitools.app/tool/chatpdf.md) | | 9 | [Readray (formerly Lilys AI)](https://openaitools.app/tool/lilys-ai) | 967,113 | -9.7% | Freemium | A proactive AI reading lens for papers, videos, and web pages | [.md](https://openaitools.app/tool/lilys-ai.md) | | 10 | [Summarizer.org](https://openaitools.app/tool/summarizer-org) | 398,509 | +1.3% | Freemium | Free AI Summarizer for text, articles, URLs and images | [.md](https://openaitools.app/tool/summarizer-org.md) | --- Source: https://openaitools.app/compare/lightpdf-com-vs-zeli More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)