OCR

TIFF to JSON with OCR

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Recognize TIFF content and export JSON with AlphaPDF Premium. Select languages and review the recognized result.

What to expect

Export recognized page text and blocks with bounding boxes and confidence values for downstream processing. TIFF may contain multiple frames. Check the resulting page count and reading order against the source document.

Confidence is a recognition signal, not proof of accuracy. Validate the schema and key values before an automated import. Proofread names and numbers; handwriting is best-effort.

Start TIFF to JSON with OCR

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Output quality is under review. This tool is not currently recommended as a reason to purchase Pro. Check all output against the source.

What it does

This tool reads the text in a TIFF file and gives it back as JSON data. Every block of recognised text is listed with its position on the page and a confidence score, so software can pick out fields or flag weak readings for a person to check. TIFF is common in document archives and fax systems. One TIFF can hold several pages, and each page is read in order, so check that the page count in the result matches the file.

When to use it

Pick this when a records workflow stores pages as TIFF and needs machine-readable text for indexing, classification or search. It fits document management systems that already keep TIFF as the master copy and only need the words alongside it.

How to use TIFF to JSON with OCR

Sign in with an account that has Premium access.
Upload .tif, .tiff files. Each file can be up to 50 MB, with up to 25 files per batch.
The output is set to JSON. Select the recognition languages and scan cleanup options. Review the available settings and choose a 1, 7 or 30-day retention period.
Start the job, then download and check the result before its retention period ends.

Related conversion options

Before you start

Confidence is a recognition signal, not proof of accuracy. Validate the schema and key values before an automated import. Proofread names and numbers; handwriting is best-effort.

Store the JSON next to the TIFF under the same name. Keeping the pair together makes it easy to rebuild your index later. Recognition is never perfect. Names, amounts and dates deserve a careful check, and handwriting is read on a best-effort basis. Select every language on the page so the right characters are expected.

Processing limits

Up to 50 MB per input; 25 files and 500 MB per batch. PDF limit: 2000 pages. Up to 2 active jobs per account. Output limit: 1000 MB. Renderer limits can reject especially large pages or images.

Example output

An inspected example is not available for this tool yet. Review the supported formats and limitations before processing.

Common questions

Can I match blocks to TIFF pages?

Yes. Blocks are listed page by page, in the same order as the frames in the TIFF.

Are multi-page TIFFs supported?

Yes. Every page in the file is recognised, in the order it appears.

What does the confidence score mean?

It shows how sure the recognition was about a block. A low score is a good reason for a human check. A high score is not proof it is right.

Which languages can it read?

Choose the languages from the list before you start. Recognition works best when every language on the page is selected.