Topics (hubs)

Hubs are curated pages that connect the right no-upload tools with the most useful guides for common problems.

Browse all subtopics Guides Tools

JSON hub

Strict JSON rules, JSON.parse errors, validation workflow, and safe export.

Open hub JSON

Errors hub

High-intent troubleshooting pages for JSON/CSV parsing errors across runtimes.

Open hub Errors

CSV hub

Delimiter issues, quoting rules, Excel pitfalls, and reliable CSV → JSON conversion.

Open hub CSV

XML hub

Namespaces, attributes, CDATA, invalid characters, and XML → JSON conversion tips.

Open hub XML

YAML hub

YAML ↔ JSON conversion, multi-document YAML (---), and indentation pitfalls (NO UPLOAD).

Open hub YAML

INI hub

INI ↔ JSON conversion, sections ([...]), comments, and common parsing pitfalls (NO UPLOAD).

Open hub INI

ENV/.env hub

dotenv (.env) ↔ JSON conversion, quoting rules, inline # comments, and safe workflows (NO UPLOAD).

Open hub ENV

.properties hub

Java .properties ↔ JSON conversion, \\uXXXX escapes, multiline values, and safe workflows (NO UPLOAD).

Open hub .properties

TOML hub

TOML ↔ JSON conversion for config workflows, with privacy-first debugging (NO UPLOAD).

Open hub TOML

Encoding hub

Base64, URL percent-encoding, and JWT decoding workflows that avoid uploading tokens or payloads.

Open hub Encoding

Privacy hub

Why “no upload” matters, what to redact, and how to debug data formats safely.

Open hub Privacy

FAQ (quick)

Start here: Tools (runs locally, no upload).

Can I fix Topics (hubs) without uploading my data? Yes. no-upload.ru tools run locally in your browser (NO UPLOAD). Start with Tools and keep samples redacted if you must share them.

What is the fastest safe workflow? Validate first, fix the smallest broken part, then validate again before converting/exporting. This prevents silent downstream issues.

Why does Topics (hubs) happen? Most issues come from copy/paste truncation, wrong encoding, non-strict syntax (comments/trailing commas), or a shape mismatch (array vs object).

Which tool should I start with for Topics (hubs)? Start with Tools. If you still see errors, follow the related playbook/trend report on this page.

Privacy & Security

All processing happens locally in your browser. Files are never uploaded.