About FreeToolSpot

Free, client-side utility tools — PDF, image, OCR, text, JSON. Every tool runs entirely inside your browser. Nothing is uploaded, nothing is stored, nothing is queued on a server. No accounts, no daily limits, no watermarks.

The site is supported by unobtrusive ads — there's no paid tier and no plan to add one. If a tool you need isn't here, the contact address below works for feature requests too.

Who runs it

I'm Jinho Park. I built FreeToolSpot on the side. My day job is AI applications — 5+ years of it, mostly document-processing pipelines that run at scale.

What I do for clients

The tools on this site are small, self-contained utilities. Most of my paid work is the bigger version of the same problem space: document pipelines that have to run accurately on thousands or millions of files, and that need to land the output somewhere a team can actually use (a database, a search index, a downstream app).

Typical engagements look like:

• OCR at scale. Custom vocabularies, domain-specific handling, batch pipelines that read from a bucket or queue and write structured output into your database.
• Search and Q&A over your own documents. Chunking, embeddings, a vector store, and an answer interface that cites the source passage. Tuned to your corpus and your users, not generic.
• Document classification and extraction. Getting structured fields out of invoices, contracts, forms, or any domain-specific PDF layout — with accuracy measurements, not just a demo.
• Production ML deployment. Taking a notebook prototype to something that runs reliably with monitoring, cost controls, and a clear rollback story.

Get in touch

If any of that sounds like something you need, email [email protected]. A short description of the problem and rough scope is enough to start a conversation — I reply to every inbound within a couple of days.

Chrome extensions

Three companion extensions bundle the most-used FreeToolSpot tools into the browser toolbar — same client-side implementations, zero permissions, zero network calls:

• PDF Toolkit — merge, compress, split, watermark, rotate, sign.
• Image Toolkit — resize, compress, crop, format-convert, EXIF strip, QR.
• Dev Toolkit — JSON / regex / JWT / hash / base64 / UUID / diff and more.

More work

Past projects and writing live at jinhopark8345.github.io.