Browser Extensions (Chrome & Microsoft Edge)
Fill PDF forms found online without downloading them. One click, and Instafill.ai loads the form and fills it with AI.
Overview
The Instafill.ai browser extensions bring powerful form-filling capabilities directly into your web browser, enabling you to fill out PDF forms with saved profile data, extract data from open tabs to fill other forms, and seamlessly integrate PDF form filling with web-based workflows. Instead of switching between your browser and the Instafill.ai platform, the extensions provide inline form filling tools, profile selection, and instant access to your form library right in your browser toolbar.
This is particularly useful for online applications, web-based government portals, SaaS form submissions, job applications through applicant tracking systems, or any workflow where you need to fill the same type of form repeatedly. The extensions sync with your Instafill.ai account, giving you access to all profiles, sources, and form data from within the browser.
Once installed, the extension automatically detects when you're viewing a PDF form online - on government sites, financial institutions, or anywhere else, and lets you fill it out instantly. There's no need to download the PDF, navigate to the dashboard, and manually upload it. Click the activated icon, and you're redirected to Instafill.ai with the form already loaded and ready to fill. Whether you're working with mortgage applications, loan documents, lease agreements, tax returns, insurance claims, immigration forms, Medicare paperwork, or legal documents, the extension brings AI form filling directly into your browsing experience.
The extension is free to install and begins working immediately after installation.
Install
| Browser | Store | Landing page | Version | Size |
|---|---|---|---|---|
| Google Chrome | Add Chrome Extension → | Instafill.ai for Chrome | 1.2.0 | 3.61 MB |
| Microsoft Edge | Add Edge Addon → | Instafill.ai for Edge | 1.2.0 | 3.61 MB |
Both extensions offer identical features and user experience. Since Microsoft Edge is built on Chromium (the same engine as Chrome), the extension architecture is the same across both browsers.
Key Capabilities
| Capability | Description |
|---|---|
| AI-powered detection | Recognizes when you're viewing a PDF form on any webpage and activates the extension icon automatically |
| One-click processing | Click the extension icon and the form is loaded into Instafill.ai - no downloading or uploading required |
| Seamless account sync | Syncs with your Instafill.ai account so profiles, sources, and form settings carry over instantly |
| Privacy-focused | Only activates on PDF forms. Browsing history, other data, and personal information remain private. |
| Smart AI form filling | Extracts data from documents and images to automatically populate form fields with validation |
| Cross-platform | Works identically in Chrome and Edge on Windows, macOS, and Linux |
How It Works
Getting started with the Instafill.ai extension is straightforward:
1. Open a PDF form online
Browse to any website that contains a PDF form. When you open the PDF, the Instafill.ai extension icon automatically becomes active.
2. Click the extension icon
Click on the activated extension icon. You'll be redirected to Instafill.ai with the form already loaded - no downloading or manual uploading required.
3. Fill out the form with AI
Instafill.ai uses AI to fill the form. Provide the necessary information - paste text, upload source documents, or apply a saved profile, and the form is filled instantly. Review the result, make any edits, and download the completed PDF.
Full walkthrough: Fill Out PDF Forms Instantly with Instafill.ai Chrome and Edge Extensions includes a video demo of the complete install-to-fill workflow.
When the Extension Saves Time
The browser extension is most valuable when you regularly encounter PDF forms online and want to skip the download-upload cycle. Instead of saving the file, navigating to Instafill.ai, and uploading it manually, one click loads the form and your account data together.
| Workflow | How the extension helps |
|---|---|
| Government applications | Open a form on a federal, state, or local government site. Click the extension and fill it with AI instead of downloading and manually completing it. |
| Financial documents | Encounter a W-9, loan application, or insurance claim form online. One click loads it into Instafill.ai with your saved data. |
| Legal and immigration forms | View a USCIS form or court filing on an agency website. The extension detects it and lets you fill it without leaving the browser. |
| Lease and rental agreements | Open a property management PDF in your browser. Click to fill it with tenant or property data from a profile. |
| Healthcare and Medicare | Access patient intake or Medicare forms on a provider portal. Fill them with AI instead of printing and completing by hand. |
| Job applications | Encounter a PDF application form on an employer's career page. Fill it with your saved professional profile in seconds. |
Security & Privacy
The extension is designed to minimize its footprint in your browser. It only activates when you're viewing a PDF form - your browsing history, other data, and personal information remain private and secure at all times.
Extension-level privacy:
| Control | Detail |
|---|---|
| Activation scope | Extension only activates on pages containing a PDF form. It does not run in the background on other pages. |
| Data handling | The extension does not cache or store form data locally. All processing happens on Instafill.ai's servers after redirect. |
| Permissions | Handles personally identifiable information only when you explicitly click the icon. Data is not sold to third parties or used for purposes unrelated to form filling. |
| No tracking | Does not track browsing history, visited sites, or page content outside of PDF forms. |
Platform-level security (after redirect to Instafill.ai):
Once the form is loaded into Instafill.ai, all platform security controls apply. These are documented in detail on the Authentication & Security feature page and summarized here:
| Control | Detail |
|---|---|
| Encryption | AES-256 encryption at rest for all stored data. Encryption in transit via TLS for all API communication. Centralized key management with scheduled key rotation. |
| Data hosting | All data processed and stored on Microsoft Azure infrastructure, fully hosted in the United States (San Antonio, TX). |
| Workspace isolation | Every workspace's data is cryptographically isolated. Workspace-scoped encryption keys and database-level filtering ensure zero cross-tenant data access. |
| Authentication | Google OAuth, Microsoft OAuth, or email/password login. Two-factor authentication (2FA) available with organization-level enforcement. |
| Stateless mode | Optional: files automatically deleted from servers immediately after processing. No data retained. |
| Compliance | HIPAA-eligible deployments, GDPR data processor obligations, ISO 27001 alignment. SOC 2 Type II audit in progress. |
| Independent testing | 102-page penetration test completed by Iterasec, covering web application, APIs, authentication, payment flows, and data access controls. Aligned with OWASP Top 10 and CWE/SANS Top 25. Full report available on request. |
Common Questions
What types of documents does the extension detect?
The extension activates when you're viewing a PDF form in your browser. This includes forms hosted on government websites, financial institutions, legal portals, healthcare systems, and any other site that serves PDF documents. It does not activate on regular web pages or HTML forms - only PDFs.
Do I need an Instafill.ai account to use the extension?
Yes. When you click the extension icon, you're redirected to Instafill.ai where the form is loaded into your account. Your profiles, source documents, and form settings are all available there. If you don't have an account, you can create one at instafill.ai.
Is the extension free?
The extension is free to install from the Chrome Web Store or Microsoft Edge Add-ons store. Form filling on Instafill.ai follows your account's subscription plan.
Does the extension access my browsing data?
No. The extension only activates when you're viewing a PDF form. It does not run scripts on other pages, does not track your browsing history, and does not read data from inactive tabs. The Chrome Web Store privacy disclosure confirms that data is not sold to third parties or used for purposes unrelated to the extension's core functionality.
Can I use the extension with profiles and source documents?
Yes. When the extension redirects you to Instafill.ai, your full account is available - including profiles and source documents. You can apply a saved profile, upload additional sources, or paste free-text data to fill the form.
What if I prefer to fill forms directly on the platform?
The extension is optional. You can always download a PDF and upload it to Instafill.ai directly, or use the API, email handler, or batch processing for other workflows. The extension simply saves the download-upload step when you find a form online.