Practical notes

Useful ideas, without the noise.

Short guides about the tools and their limitations. Search filters these notes locally on this page.

Data · 3 min

JSON: structure and common errors

JSON objects use braces and arrays use brackets. Property names and strings need double quotes. Trailing commas are not permitted.

{"name":"NorthCloud","active":true} is a valid example.

Try the formatter →
Text · 2 min

Base64 is not encryption

Base64 represents bytes with printable characters. Anyone who has an encoded value can decode it.

NorthCloud uses UTF-8, so multilingual text and emoji work as expected.

Open the tool →
Integrity · 3 min

Why SHA-256 matters

SHA-256 computes a 256-bit fingerprint of input data. Changing a file will almost certainly change its checksum.

A matching hash helps verify an intact download, but does not independently establish the publisher's identity.

Hash a file →
Browser · 2 min

Reading browser signals

Time and time zone come from the local device. The network hint uses navigator.onLine: it can be inaccurate and does not check any server's availability.

Use dedicated network diagnostics to test a specific remote address.

Back to home →
Privacy · 3 min

Where your data goes

The tools operate locally and contain no code that uploads entered text or selected files. Loading a website still exposes network information, including your IP address, to the server.

Consider untrusted browser extensions and avoid entering sensitive secrets without good reason.

Read the policy →
Web · 2 min

HTTPS and safe browsing

HTTPS protects the connection between your browser and the site when certificate verification succeeds. It does not guarantee device security or the safety of browser extensions.

Verify the domain and never dismiss certificate warnings before providing personal information.

About NorthCloud →