Worked example · 5 min read
Convert JSON and YAML without silently rounding numbers
Convert JSON and YAML with large integers, precise decimals and string IDs. Check the expected output and learn what downstream parsers may change.
Practical guides for everyday tool problems
Check a conversion, prepare an image, interpret a speed test or work through a calculation. Each walkthrough gives you a reproducible example, an expected result and the limits to check before using it elsewhere.
Start with the result you need
Choose the walkthrough that matches the uncertainty in your task. Each example is small enough to reproduce before you try your own file. A tool can finish successfully while a receiving application still interprets its output differently, so the final handoff check matters.
- Prepare images and interpret measurements: compare formats in the image compression guide and distinguish speed from latency in the speed results guide.
- Check calculations and keep work recoverable: record angle mode and grouping with the calculator guide, or combine a focus timer and exported task backups in the local task workflow.
- Preserve values during conversion: start with the JSON/YAML number guide or the CSV leading-zero guide. Compare identifiers, multiline fields and the data types the destination expects.
- Prepare text for another system: use the Base64 guide to distinguish text from bytes, the SQL guide to match a dialect, or the Markdown guide to compare source with cleaned HTML.
- Check a visible result: follow the color guide for alpha and text contrast, or the PDF guide for document and page order.
- Predict a schedule: use the cron guide to check a time zone and both sides of a daylight-saving change.
Choose a walkthrough
Worked example · 5 min read
Convert CSV to JSON while keeping leading zeros and line breaks
Convert a realistic CSV example with a 00123 identifier, quoted commas, escaped quotes and a multiline field. Check the expected JSON and a safe return to CSV.
Worked example · 6 min read
Check cron schedules across time zones and daylight saving
Preview five-field cron with America/Toronto examples. See the difference between local time and UTC, skipped spring times and repeated autumn times.
Worked example · 5 min read
Merge PDFs in the right order and check the result
Merge PDFs in a chosen order, verify the downloaded pages and extract a range. Follow a local processing example and understand document limitations.
Worked example · 5 min read
Decode Base64 without confusing text and binary bytes
Test Unicode, URL-safe Base64, padding and binary output with reproducible examples. Understand which bytes survive copying, editing and downloading.
Worked example · 5 min read
Format SQL for the right dialect and review the result
A PostgreSQL formatting example, dialect selection tips and a practical review checklist. See why readable SQL does not prove validity or performance.
Worked example · 5 min read
Preview Markdown and understand the cleaned HTML export
Compare Markdown source, sanitized HTML and a standalone download. Test tables, links, code and omitted images without embedded image requests.
Worked example · 5 min read
Convert CSS colors without losing alpha or misreading contrast
Convert a transparent HEX color to RGB and HSL, check text on its real background, and compare near-threshold contrast values with worked examples.
Worked example · 5 min read
Compress images without a visible loss of quality
Reduce JPG, PNG and WebP file size by choosing the right format, quality and width. A worked example and a checklist for judging the result before you save.
Worked example · 6 min read
Read your internet speed test results: Mbps, ping and jitter
Understand download, upload, ping, jitter and ping under load, convert Mbps to MB/s, and run a fairer test before you contact your provider.
Worked example · 5 min read
Base64 is not encryption: what it does and when to use it
Encode and decode Base64 with checkable examples, learn standard versus URL-safe alphabets and padding, and avoid treating encoded secrets as protected.
Worked example · 4 min read
Use a task list and timer without losing your work
Plan a small task, run a timed focus session and export a local task backup. Check browser storage and notification limits before relying on the workflow.
Worked example · 4 min read
Check an expression and graph before trusting a result
Verify calculator angle mode, parentheses and graph range with small reproducible examples. Learn why a numerical output or plotted line still needs context.
What these guides cover
Each guide describes the behavior of the linked Your Tech Tool tool. Where a file format or another application can behave differently, it says so. Examples use invented sample data rather than customer documents.
- Run the published sample with the stated settings and compare the expected output.
- Try a small, non-sensitive sample of your own data. Keep an original copy so you can investigate differences.
- Open or import the result in the application that will actually use it. Check values and behavior, not only that a file was created.
Important format and scheduling details link to their primary documentation. Our testing and methodology page explains the checks behind the examples and the limits of browser testing. If a sample does not match your result, please report the input and steps with private information removed.