Privacy Policy

Parquet Viewer is a tool for opening and exploring data files — Apache Parquet, CSV, JSON, and more — built by AzComputing Limited. It runs in your web browser and as a macOS app. This policy explains what does, and what does not, leave your device when you use it.

The short version

Parquet Viewer is built to keep your data on your own computer. The files you open are read and processed locally, on your device; their contents are never uploaded to us. The only information that ever reaches our servers is:

• the AI assistant — only when you choose to use it, and only your question plus your table's column names and types (never the data itself);
• the contact form — only if you fill it in;
• payment and license information — only when you purchase Pro on the web;
• ordinary web server logs and privacy-friendly, cookieless analytics when you visit the website.

We don't sell your data, we don't set tracking cookies, and you don't need an account.

Files you open

On the web, Parquet Viewer reads and queries your files entirely inside your browser using WebAssembly. On macOS, the app does the same work locally on your machine. Either way, the contents of your files stay on your device — we never receive them.

When you open a file hosted at a URL, the request goes from your device directly to wherever that file lives, not through us. Remote Parquet files are read in place using HTTP range requests, so only the portions needed are fetched. Remote CSV, TSV, JSON, and JSONL files are downloaded once into storage on your device (your browser's private storage on the web, or a temporary file in the app on macOS) and then opened locally. Exporting data also happens locally and saves to your device.

The AI assistant

Parquet Viewer includes an optional AI assistant that turns a natural-language question into a SQL query you can run against your data. It is the one feature that sends information derived from your file off your device, so here is exactly what happens.

When you ask the AI a question, your browser or app sends to our server:

• your question (up to roughly 2,000 characters);
• the schema of your table — that is, the column names and their data types;
• optionally, the SQL query you are currently editing, or an error message from a query that failed.

What we do not send: the rows or contents of your file, the file's name, your name, or any account or identity information.

Our server forwards this to a third-party AI provider, which runs a large language model to generate the SQL and streams the result back to you. We only use AI providers that operate under a zero-data-retention policy, meaning they do not store, log, or train on the requests we send — the request is used only to generate your query and is then discarded. We also include a short, randomly generated installation identifier with each AI request so we can apply rate limits (free use is capped); this identifier is created on your device and is not tied to your name or email. If you would rather send nothing at all, simply don't use the AI feature — everything else in Parquet Viewer works without it.

Website analytics

We use Simple Analytics, a privacy-friendly analytics service, to understand aggregate traffic to our website — such as page views, referring sites, and how many visitors open the web viewer. Simple Analytics is cookieless, does not collect personal data, and does not track you across sites. The contents of any files you open are never sent to us or to Simple Analytics.

Contact form

If you use the form on our contact page, the name, email address, and message you submit are delivered to us through Web3Forms, an email-delivery service. We use this information only to read and reply to your message.

Server logs

Like virtually every website, our server keeps short-lived request logs — such as your IP address, browser user-agent, and the time of the request — when you load the website or use the AI assistant. We use these to keep the service running, prevent abuse, and enforce AI rate limits. We do not run any third-party crash-reporting or device-fingerprinting tools.

Payments

The macOS app offers an optional paid subscription, purchased through the Apple App Store. Apple processes the payment and we receive Apple's transaction and subscription status — not your payment-card details. Apple's handling of your purchase is governed by Apple's own privacy policy.

On the web, a 24-hour Pro day pass or one-year Pro license can be purchased through Stripe. Stripe processes your payment-card details; we do not receive or store them. We do receive and store your checkout identifier, email address, payment status, and issued license information so that we can activate Pro and assist with purchase recovery. Stripe handles this information under its own privacy policy.

Cookies and local storage

Parquet Viewer does not set advertising or cross-site tracking cookies. The app does use your browser's local storage (or the equivalent storage in the macOS app) to keep things like your preferences and the installation identifier used for AI rate limiting and, after a web purchase, your Pro license key. This data stays on your device.

Children's privacy

Parquet Viewer is not directed to children under the age of 13, and we do not knowingly collect personal information from them. If you believe a child has provided us with personal information, please contact us and we will delete it.

Links to other sites

Parquet Viewer can open files hosted elsewhere, and our site may link to third-party websites. We do not control those sites and are not responsible for their content or privacy practices, so we encourage you to review their policies.

Data security

We take reasonable, commercially accepted measures to protect the limited information that reaches us. No method of transmission over the internet or method of electronic storage is completely secure, however, so we cannot guarantee its absolute security.

Changes to this policy

We may update this Privacy Policy from time to time. When we do, we will revise the "last updated" date above and post the new version on this page. Changes take effect when they are posted.

Contact us

If you have any questions or suggestions about this Privacy Policy, please reach out through our contact page.

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