A workshop for small products
Small products, tested in public.
Clioos is a workshop of small products and free tools, tested in public. Everything here is an experiment: what earns real revenue graduates to its own domain, and what doesn’t gets shut down.
One at a time.
Our products
AstrologyLive
SyncChart
syncchart.clioos.com
Compatibility reports calculated from both real birth charts. Pay once, not forever.
Open SyncChart ↗
SEO toolsLive
IndexRocket
indexrocket.clioos.com
Bulk IndexNow submission, with a receipt for every URL you push.
Open IndexRocket ↗
PDF toolsLive
PDF Probe
clioos.com/pdf
Convert PDFs to Excel — digital tables and scanned pages, with a balance check. Free for your first 10 pages.
Open PDF Probe ↗
Screenshot API免费体验
Shot
clioos.com/shot
Turn any URL into a screenshot — a screenshot API for developers. Free, 20 shots a day.
Open Shot ↗
App Store tools免费体验
App Store Screenshots
clioos.com/app-screenshots
Turn one app screenshot into App Store-ready sets — free 6.9″ size, unlimited exports.
Open tool ↗
GEO / AI searchLive
AI Visibility Lite
clioos.com/ai-visibility
Spot-check whether ChatGPT or Perplexity mentions your brand — official APIs only, one-off check packs. We never promise citations.
Open AI Visibility ↗
GEO / llms.txt免费体验
llms.txt Generator
clioos.com/llms-txt
Create a spec-compliant llms.txt for your site, or check a public URL — free, no account required for basic use.
Open llms.txt tool ↗
Subtitle toolsLive
Subtitle Translator
clioos.com/subtitle-translator
Upload a video or an .srt file. Get translated captions back — one-off minute packs, no monthly subscription.
Open Subtitle Translator ↗
Startup directoryLive
IndieShelf
indieshelf.clioos.com
A free startup listing & SaaS directory for indie products — submit once, get listed after review. No pay-to-rank.
Open IndieShelf ↗
HVAC tools免费体验
HVAC Duct Calculator
clioos.com/hvac-duct-calculator
Size a duct from airflow and friction rate — round and rectangular, imperial and metric. Free single-duct calculation.
Open tool ↗
GEO / AI search免费体验
GEO Audit
clioos.com/geo-audit
Enter a URL and see whether AI search can cite your site — llms.txt, AI crawler access, structured data, all checked free.
Open tool ↗
Small business tools免费体验
Quote Widget
clioos.com/quote-widget
A price calculator visitors can use on your own website — pick a template, set your prices, get an instant estimate and every lead sent to your email.
Open tool ↗
Free tools
Guides
Browse all guides →Guide
How to Convert PDF to Excel
Upload a PDF table, check the preview, download a clean .xlsx — free for the first 10 pages.
Read the guide →
Guide
How to Convert a Bank Statement PDF to Excel
Turn a statement into a spreadsheet and verify it with the balance reconciliation.
Read the guide →
Guide
How to Convert a Scanned PDF to Excel
OCR route for paper statements: what makes a scan readable, and what doesn't work.
Read the guide →
Guide
How to Convert PDF to Word
Two free offline paths: LibreOffice Writer Save As Word, and a short pdf2docx script — tested on a one-page letter.
Read the guide →
Guide
How to Convert PDF to JPG
One page becomes one JPG: 150 DPI for sharing, 300 DPI for print — tested with free offline tools, no upload.
Read the guide →
Guide
How to Edit a PDF
Fix a typo for real: a tested PyMuPDF script plus the LibreOffice Draw route — and the limits free tools won't tell you.
Read the guide →
Guide
How to Merge PDF Files
3 pages + 2 pages = 5 pages, in the order you list them — tested with pypdf and pdfunite, no upload.
Read the guide →
Guide
How to Convert PDF to CSV
PDF Probe has no direct CSV export — the honest path is PDF to Excel, then Save As CSV. Tested: 12 rows, 5 columns, balance intact.
Read the guide →
Guide
How to Compress a PDF
A photo-heavy PDF shrank 81.5% with one free offline command — but a text-only PDF grew. Tested numbers inside.
Read the guide →
Guide
How to Convert PDF to PNG
One page becomes one PNG: 1241×1754 at 150 DPI, 2481×3508 at 300 DPI — tested with free offline pdftoppm, no upload.
Read the guide →
Guide
How to Split a PDF
6 pages in, 6 one-page files out — plus any page range you pick. Tested with pdfseparate and pypdf, no upload.
Read the guide →
Guide
How to Take a Screenshot of a Website
Shot's free API renders any public URL to PNG, JPEG or WebP: 20 renders a day per key, no credit card. Tested: 1280x800 in 2,482 ms.
Read the guide →
Guide
How to Capture a Full Web Page
Full-page capture is a different job from a viewport shot: scroll-triggered lazy loading, tall images, and a pixel cap. Tested: 1280x3868 in 3,058 ms.
Read the guide →
Guide
How to Submit Your Website to Search Engines
No tool can guarantee indexing, and IndexNow does not submit to Google. The honest path: GSC sitemap + IndexNow to Bing and others + a free estimate check.
Read the guide →
Guide
How to Translate Subtitles
Upload a video or an SRT file and get translated captions back. Free 10 minutes per email, minute packs that never expire, and always proofread before publishing.
Read the guide →
Guide
How to Translate SRT Files
Translate an existing SRT file: cue text changes, cue numbers and timestamps stay exactly where they were. SRT-only jobs skip transcription entirely.
Read the guide →
Guide
What Is llms txt
A proposed Markdown site map for language models: one H1 title, an optional summary, and curated links. A proposal, not a standard — and no citation promise comes with it.
Read the guide →
Guide
llms txt Example
A real generated llms txt file, explained line by line, with the checker results that prove its structure — and the missing-H1 failure that proves the checker actually rejects bad input.
Read the guide →
Guide
How to Convert a Scanned Bank Statement to Excel
Paper statement + scan: OCR the page, then prove the numbers with the balance reconciliation.
Read the guide →
Guide
App Store Screenshot Sizes
The four sizes the Clioos tool exports, with exact pixels — and which one is actually free.
Read the guide →
Guide
How to Convert JPG to PDF
Two sample JPGs became a 2-page PDF with one free offline command — tested numbers inside.
Read the guide →
Guide
How to Sign a PDF Online
A 1-page PDF got a signature and date stamp with free offline tools — and how that differs from a certified signature.
Read the guide →
Guide
How to Fill a PDF Form
A 3-field form filled offline and read back with every value intact — plus the forms that won't fill this way.
Read the guide →
Guide
How to Convert PNG to PDF
Two sample PNGs became a 2-page PDF with one free offline command — tested numbers inside.
Read the guide →
Guide
How to Convert PDF to Text
A text PDF extracts cleanly; an image-only PDF extracts nothing — both tested, with the OCR boundary stated.
Read the guide →
Guide
How to Convert TXT to PDF
A 126-byte text file became a 1-page PDF with a free offline script — tested numbers inside.
Read the guide →
Guide
How to Add Page Numbers to a PDF
Stamps that pdftotext can read back — a 2-page PDF stamped and verified, numbers inside.
Read the guide →
Guide
How to Translate YouTube Subtitles
YouTube gives you the captions file; Clioos translates it — the two steps kept separate, no direct-download claim.
Read the guide →
Guide
How to Appear in ChatGPT Answers
No submission form exists for ChatGPT answers — the honest path is becoming citable, then checking what answers actually say.
Read the guide →
Guide
Product Launch Checklist
Launch day is a checklist, not a promise: pages live, listings submitted, verification done days later.
Read the guide →
Guide
Dating a Virgo
Virgo dating notes as entertainment: traits, dates, and where to check a real score.
Read the guide →
Guide
Dating a Sagittarius
Sagittarius dating notes as entertainment: traits, dates, and where to check a real score.
Read the guide →
Guide
Astrology Dating Chart
Dating charts explained: synastry vs composite, and why a sun sign alone is not enough.
Read the guide →
Everything here is an experiment. A project that earns real revenue graduates to its own domain. One that doesn't gets shut down.
Frequently asked questions
What is Clioos?
Clioos is a workshop for small products and free tools, built by an independent developer, one product at a time.
Are the tools on Clioos free?
Many tools are free to try, including free tiers such as PDF Probe's first 10 pages and Shot's 20 shots a day. Many paid options are one-off packs, not monthly subscriptions.
What does “tested in public” mean?
Every product here is published as an experiment. Real usage decides what stays, what changes, and what gets shut down.
What happens to a product that earns real revenue?
It graduates to its own domain, instead of staying under clioos.com.
What happens to a product that doesn't earn?
It gets shut down.
How can I contact Clioos?
Email contact@clioos.com.