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Create a QR code that still scans after you print it
Choose a stable destination, preserve the white margin, and test the downloaded QR at the size and distance people will actually use.
THE KITFORMA BLOG
Small guides. Useful answers.
Practical ways to work with PDFs, images, text and data. Find the right approach, follow the steps and put it to work with a free tool.
52
practical guides
Every guide is available in English and Turkish.1–19 / 19 guides
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Base64 is not encryption: encode and decode text correctly
Understand what Base64 changes, choose the right alphabet, and avoid mistaking readable encoding for protection of passwords or tokens.
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URL encode and decode: %20, + and %2F examples
Learn when to use URL encoding or decoding, compare %20 with +, and test query values, Unicode and double encoding with working examples.
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Format JSON without changing the data you meant to keep
Make a JSON document readable while understanding duplicate keys, large numeric identifiers and the difference between syntax and schema.
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Convert CSV and JSON while keeping identifiers intact
Handle headers, quoted cells, leading zeros and spreadsheet formulas, and understand why a CSV–JSON round trip is not always reversible.
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Test a regular expression: matches, positions and supported syntax
Find product-code patterns in sample text, check match positions, and understand the limits of KitForma’s bounded regex tester.
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Why SHA-256 changes when you add a space or newline
Compare two exact text digests, diagnose whitespace differences, and distinguish a text hash from a file checksum or password-storage scheme.
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MB vs MiB: convert units without changing the underlying value
Work through decimal and binary file sizes, US and Imperial gallons, and absolute temperatures with explicit unit conventions.
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Shopify product CSV import errors: check the file before importing again
Diagnose headers, quoting, variants and image links in a Shopify product CSV, then review changes and test a small import deliberately.
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Etsy keyword research: build an evidence worksheet before changing a listing
Separate real search observations, your own listing text and assumptions. Compare a small set of relevant keywords without inventing competitor sales or search volume.
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Etsy sales CSV analysis: avoid counting line totals twice
Reconcile your own order-item export with a small test. Map quantities, dates and currencies explicitly, and keep item totals separate from profit and deposits.
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Shopify CSV recovery: broken UTF-8 text and missing SKU zeros are different problems
Diagnose damaged characters separately from spreadsheet conversions. Recover from an untouched source, preserve identifiers and rehearse a small product import.
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CSV cells, image pixels and bytes: a reproducible file lab
Repeat a small KitForma experiment with downloadable CSV and image inputs, actual outputs, exact byte counts, source code and clearly stated limits.
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Measure a short-video experiment without inventing a viral result
Choose a question, log comparable releases, calculate rates with their denominators and use AI to inspect a real export without fabricating analytics.
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Why a page shows &: diagnose an extra HTML escaping layer
Trace a harmless label through raw text, HTML source and rendered output; repair the wrong layer without repeatedly decoding unknown content.
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Missing, null or empty: write a JSON field contract before importing
Use a four-record contact example to distinguish an omitted field, null, an empty string and a real value before a CSV export hides the difference.
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JSON Lines or a JSON array: identify an export before you repair it
Diagnose an extra-data parse error with two synthetic event records, keep line boundaries meaningful and choose the format your importer actually accepts.
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Count CSV records correctly when cells contain line breaks
Use a two-order CSV fixture to distinguish physical lines from records, avoid breaking quoted notes and verify a split export by stable IDs.
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Keep formula-looking text literal in a spreadsheet review export
Build a harmless three-cell fixture, distinguish CSV quoting from spreadsheet interpretation and record whether protection changed the delivered strings.