A modern browser's network profile for any application
BlankTrail Proxy aligns the network layer of an HTTP client, script or automation system with a chosen browser profile. TLS, JA3/JA4, HTTP/2, HTTP/3, headers and connection parameters are produced as a single, coherent configuration — without replacing your application or reworking existing workflows.
Stable connections. Managed routes. Predictable costs.
Chain proxies & tunnels
Build composite routes through SOCKS5, HTTP, OpenVPN and VLESS+Reality. BlankTrail Proxy lets you combine several transport layers in sequence and manage their configuration centrally.
Local caching of static assets
Scripts, styles, fonts and other static assets can be stored locally and reused within a given profile. This reduces the volume of traffic through pay-per-GB proxies and speeds up repeated workflows.
DNS and IPv6 control
Before a route is activated, BlankTrail Proxy checks DNS resolution, the exit IP and whether an unwanted IPv6 route is present. The check helps detect an inconsistent network configuration before the main process starts.
What BlankTrail Proxy does
The product's technical functions, without abstract promises.
Challenge Breaker
Challenge Breaker automatically handles the checks that sit between your client and the resource you need, opening access for the work that follows. Subsequent requests run quickly and efficiently, without heavy infrastructure or excess load on memory, CPU and proxy traffic. The feature is built for integration testing and authorized automation scenarios.
TLS and JA3/JA4 profiles
BlankTrail Proxy reproduces the cipher-suite ordering, TLS extensions, supported groups and other ClientHello parameters at the network-connection level. The resulting configuration matches the selected browser-profile version and can be used to test how servers handle different clients.
Profile variants
You can create separate network-profile variants for different workflows. Permitted parameters — including the order of some extensions and padding — are formed within the characteristics of the chosen browser family. This lets you test server infrastructure against several valid client-connection variants.
Compatible with existing tools
BlankTrail Proxy connects as a local HTTP or SOCKS5 proxy. It supports ZennoPoster, BAS, Puppeteer, Playwright, Selenium, command-line utilities, parsers and any application that can work through a proxy. In most cases no source-code changes are required.
Signed profile updates
The network stacks of Chrome, Firefox, Safari and other browsers change with each new version. BlankTrail Proxy receives signed profile updates so the available configurations match current browser versions. The digital signature lets you verify the origin and integrity of each update.
High concurrency
An optimized Go core is built for multi-threaded scenarios and can serve more than 10,000 concurrent connections given sufficient system resources. Individual processes can be assigned different network profiles, ports and outbound routes. Actual performance depends on hardware, network bandwidth, protocol type and the proxies used.
Works with your own infrastructure
Use your own HTTP, SOCKS5 or VPN route, or connect directly. BlankTrail Proxy installs locally and sits between your application and the chosen connection destination. Routing user traffic through BlankTrail infrastructure is not required.
A managed network environment for automation and QA
Reproduce a browser's network configuration
Save the TLS ClientHello and HTTP/2 profile parameters from a controlled browser session and assign them to a local proxy port.
After that, different HTTP clients can use the same connection configuration. The feature is useful for reproducing bugs, comparative testing of libraries and checking server compatibility.
Integrates with your stack
Point browser-automation tools (Playwright, Puppeteer, Selenium), browser environments, parsers, CLI applications, your own HTTP clients and internal QA tools at BlankTrail Proxy. It manages network profiles centrally, without requiring a separate TLS and HTTP/2 implementation in each application.
The product is intended for automation, QA, compatibility testing and authorized data collection.
HTTP/3 and QUIC
If the target server supports HTTP/3, BlankTrail Proxy can establish an outbound QUIC connection with the parameters of the chosen browser profile. Meanwhile the source application can keep working over HTTP/1.1 or HTTP/2.
Connection path: your HTTP client → BlankTrail Proxy → HTTP/3 or QUIC → target server. The feature lets you test HTTP/3 infrastructure without adding QUIC support to every client application.
Managed DNS resolution
DNS queries can be performed through the chosen exit route. This helps avoid mismatches between the application's route and the DNS infrastructure, and ensures consistent domain resolution in reproducible test environments.
Available modes: on_leak — resolve through the route when an inconsistent configuration is detected; forced — always perform DNS resolution through the chosen exit.
Plans
Transparent monthly subscription with no long-term commitment. All plans include signed profile updates and management of bound devices.
For sequential tasks, individual tests and getting to know the core capabilities of BlankTrail Proxy.
Choose this planIncludes the Port Pool, per-port configurations and support for multi-threaded processes. Challenge Breaker not included.
Choose this planEverything in Standard, plus Challenge Breaker for automatically handling web checks.
Choose this planEverything in Pro, plus up to 10 concurrent Challenge Breaker tasks for high-load workloads.
Choose this planFor integrating BlankTrail Proxy into your own applications, internal platforms and commercial services. Licensing terms and permitted load are defined individually.
Discuss integrationYou can request a full refund within 48 hours of purchase if the product doesn't fit your technical use case.
Frequently asked questions
What exactly does BlankTrail Proxy change at the network level?
BlankTrail Proxy acts as a local TLS-terminating proxy. It accepts the connection from your application and creates a new outbound connection with the parameters of the chosen browser profile: cipher suites, TLS extensions, supported groups and HTTP-protocol settings. This lets you use a consistent, reproducible network configuration regardless of the original HTTP library.
Does BlankTrail Proxy work with programs that already have a proxy setting?
Yes. Set the local HTTP or SOCKS5 port of BlankTrail Proxy as your application's proxy. BlankTrail Proxy will then make the outbound connection directly or through the proxy, VPN or tunnel you specify. For advanced control of ports, profiles and routes you can use the BlankTrail Proxy API.
How do profile variants work?
Each profile is assigned a stable base configuration. For individual connections BlankTrail Proxy can apply permitted variations of parameters typical of the chosen browser family. This lets you run tests across several valid network-behavior variants without configuring anything by hand.
What happens after the subscription ends?
BlankTrail Proxy requires an active subscription. The profile database is regularly updated to follow changes in the network stacks of modern browsers. The subscription provides access to current profiles, signed updates and the device-management system. During a short authorization-server outage a technical stability window keeps an already-running instance working. After the subscription ends, the proxy ports stop being served. The device binding is preserved and is restored once the subscription resumes.
Add a managed network layer to your automation
Install BlankTrail Proxy, create your first browser profile and connect your application through a local HTTP or SOCKS5 port.