🏺 Pithos Web Lite — Browser Client

Optimize your prompts before pasting them to ChatGPT, Gemini, or Claude.

Using Claude Pro or ChatGPT Plus? Stretching your message limits is hard when large codebase files clog your context window. Pithos Web Lite runs 100% locally in your browser to prune dead weight and restructure prompts so Claude/ChatGPT/Gemini's own prompt caching actually triggers.

Try Web Lite Now (Free) View Pricing (Unlimited Plus)

WebLLM Smart Mode LOCAL AI

Progressive browser-local compression intelligence

1 / 15 free daily optimizations used

Raw Prompt Input

// Raw code with unused boilerplate and duplicate references...
import { HeavyModule } from "very-large-dependency";
import { AnotherOne } from "another-unused-package";

// Unrelated function that clutters context
function legacyHelper(data) {
  console.log("Parsing...", data);
  return data.filter(d => d.active);
}

// Target function to modify
function calculateTotal(price, tax) {
  return price + tax;
}

// AI: Edit the calculateTotal function to support a discount parameter

Optimized Output (Structured for Prompt Cache Hits) ~19% Saved

// [Pithos Context Optimized] Unused imports & legacyHelper pruned.
// [Pithos Cache Structure Active]

function calculateTotal(price, tax) {
return price + tax;
}

// Instruction: Edit the calculateTotal function to support a discount parameter

How Web Lite Works

Zero install, fully local, progressive browser optimization.

1. Instant Pure-Code Optimizer

Runs instantly in any browser. Performs quick file cleaning, whitespace compression, code linter checks, and counts tokens locally without downloading additional models.

2. Local WebLLM Smart Mode

If your browser supports WebGPU, a tiny local LLM (Qwen2.5-1.5B) is downloaded directly into your browser's Cache Storage. Running entirely on your GPU, it restructures and aligns instructions for maximum prompt cache efficiency.

3. Graceful Fallback

No WebGPU support? Web Lite automatically falls back to our pure-code optimizer. You still get high-performance compression and token counts without lags or server connections.

⚡

Zero Installation

No VS Code extension or local CLI required. Simply open the app, optimize your instructions, and copy the prompt directly into your chat.

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100% Secure Client-Side

All processing is handled inside your browser. No API keys or source code ever leave your machine, preventing cloud leaks and server-side tracking.

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Free & Plus Limits

Enjoy 15 free daily prompt optimizations. Upgrade to the Plus tier ($9/month) for unlimited optimizations and complete WebLLM Smart Mode intelligence.