hn-ai-summarizer vs readability-read-aloud-web-pdf-ai-summary

hn-ai-summarizer and readability-read-aloud-web-pdf-ai-summary are both summarizers tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

hn-ai-summarizer

The tool runs on a schedule, pulls the top Hacker News stories, summarizes them with an AI model, and delivers a filtered, translated briefing to a Telegram channel or chat. It lives entirely on your own hardware via Docker, so no data leaves your infrastructure. That self-hosted constraint is the whole point — and also the ceiling. There is no hosted version, no web UI for non-technical users, and no notification channel beyond Telegram. If your team communicates in Slack or needs a browser-based dashboard, this does not cover that.

readability-read-aloud-web-pdf-ai-summary

The extension processes web articles and PDFs through a local readability pipeline, strips clutter, highlights sentences as they're read aloud, and stores documents in an on-device library with semantic search. No external API calls means no data leaves the browser. The sentence-level TTS highlighting keeps you oriented in long-form content where cloud read-aloud tools often lose sync. The library persists processed documents and lets you export paginated PDFs. Where it breaks: the on-device model footprint limits summarization quality compared to hosted LLMs, and users needing cross-device sync or team-shared libraries find nothing here for them.

Attribute	hn-ai-summarizer	readability-read-aloud-web-pdf-ai-summary
Pricing	Free	Free
Free trial	No	No
Open source	Yes	Yes
Has API	No	No
Self-hosted option	Yes	Yes
Platforms	Docker, self-hosted servers, Raspberry Pi, NAS	Chrome, Firefox
Pros	Scheduled AI summarization of top Hacker News stories, so you read the signal without manually triaging the full front page each day. Keyword-based interest filtering — configured per-user — so stories outside your focus areas (say, anything not tagged AI or security) are excluded before the briefing is assembled. Translation support for non-English readers, which means you get the summary in your working language rather than having to run stories through a separate translation step. Fully self-hosted via Docker with an MIT license, so your reading preferences and API credentials never touch a third-party cloud service — the alternative being tools that log your queries on vendor infrastructure. Telegram delivery with scheduling, which means the briefing arrives at a time you set rather than requiring you to open a dashboard and remember to check it.	Fully on-device processing — extraction, summarization, and TTS never touch an external server — so documents containing sensitive research or proprietary content stay local without any API key management or vendor trust decisions. Sentence-level TTS highlighting keeps your position in long articles and PDFs visible while listening, which means you don't lose your place when switching focus the way you do with a separate read-aloud tool. On-device semantic search across your saved library, so you can retrieve a document by concept rather than remembering the exact title or URL — without indexing your reading history on a third-party server. PDF.js-based rendering with KaTeX math support and table OCR, so academic papers with equations and data tables don't collapse into unreadable character soup the way they do in basic readability extractors. Paginated PDF export from the library, which means documents you've cleaned and annotated can leave the tool in a portable format without reformatting work.
Cons	Telegram is the only supported notification channel. Teams or individuals whose async communication runs through Slack, Discord, or email cannot use this without modifying the source code — there is no plugin or webhook abstraction in the current codebase. There is no web UI. Configuration lives entirely in environment variables and the docker-compose file, which means every setting change requires SSH access and a container restart. Non-technical users or shared-team deployments stall at the setup stage. The tool has no REST API or output format beyond Telegram messages, so any team wanting to pipe summaries into a second system — a Notion database, a team wiki, a Slack bot — is writing custom glue code rather than using a supported integration. With three GitHub stars and zero forks at the time of scraping, community support is minimal. When the upstream Hacker News API or a chosen AI provider changes behavior, the maintainer is a single point of failure. Teams with production-critical digest pipelines move to more actively maintained alternatives at the first breaking change.	On-device summarization quality hits a ceiling that hosted LLMs clear easily — for a short blog post it's adequate, but for a 40-page research report the summary loses nuance and misses key arguments. Teams with a quality bar for summaries switch to a pipeline that calls an external model and accept the privacy tradeoff. No cross-device sync and no shared library: every document saved on your laptop stays there. A team trying to share a curated reading list or pass annotated documents between members has no path forward in this tool and moves to a hosted alternative or a self-hosted knowledge base with a proper multi-user layer. The extension is a single-maintainer open-source project with 2 stars and no listed issues or pull requests at the time of listing — production reliance on it means owning any bug fixes yourself, with no support channel and no community to absorb the maintenance load if development stalls.

Bottom line

hn-ai-summarizer and readability-read-aloud-web-pdf-ai-summary are closely matched on pricing model, openness, and API availability — pick by feature set and platform support in the table above.

Frequently asked questions

What is the difference between hn-ai-summarizer and readability-read-aloud-web-pdf-ai-summary?

hn-ai-summarizer is Free and open source, while readability-read-aloud-web-pdf-ai-summary is Free and open source. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is hn-ai-summarizer better than readability-read-aloud-web-pdf-ai-summary?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.