Help
Support
viewparquet runs entirely in your browser. Most issues relate to file size, browser memory, or SQL syntax. Check the FAQ on the home page first.
Contact
The fastest path is the support widget in the bottom-right corner of the data viewer. It opens a messenger so replies are waiting for you when you come back.
You can also email us at antony@kaladev.co with a description of the problem, your browser, and file type (Parquet, GeoParquet, CSV, or JSON). Please do not attach sensitive datasets unless you have permission to share them.
S3 & remote URLs
Open Parquet and other formats from HTTPS links, public s3:// objects, or private buckets in the viewer via Open from S3 / URL (or /viewer?open=remote).
- Public URL: paste HTTPS or a presigned link; no credentials needed.
- Private bucket: use the Credentials tab with AWS, Cloudflare R2, GCS (HMAC), or MinIO presets. Keys sign requests in-browser only.
- 403 / CORS errors: check bucket policy and IAM permissions; for browser HTTPS URLs the bucket may need CORS on GET.
Step-by-step walkthrough: How to open Parquet from S3 privately.
AI assistant
The AI assistant is optional and BYOK-only. Add an OpenRouter or supported direct provider key under Settings → AI → Connection. BYOK keys stay in your browser and are never sent to viewparquet servers.
- BYOK setup: create a key at openrouter.ai/keys and paste it in Settings → AI → Connection. Pick a model in the chat panel or Models settings.
- Data sharing: control what the assistant sees in Settings → AI → Privacy (column headers, types, metadata, sample values). Chat and SQL helper can use different presets.
- SQL Ask AI / Fix: use ⌘K or Ctrl+K in the SQL editor. It follows your selected BYOK model and your data-sharing settings.
- Usage and billing: AI usage and charges are on your provider account. View approximate OpenRouter usage in Settings → AI → Connection when connected.
For what leaves your browser when AI is enabled, see our Privacy Policy.
Resources
- Open Parquet from S3 privately : HTTPS, presigned URLs, and private buckets
- Parquet FAQ : how to open, view, query, and convert Parquet files
- Changelog : recent product updates
- Feature requests & feedback : vote on roadmap items
- Blog : guides on Parquet, DuckDB, and data workflows
- DuckDB documentation : SQL reference for queries in the viewer
Company
viewparquet is built by Kaladev Digital. Follow updates on X (@antonyadhiban).