---
title: "Fastify: Speed & SEO Optimizer Shopify App Profile"
description: "‏Fastify offers all-in-one page speed optimization and SEO tools. Enhance SEO rankings with tailored alt text and image compression, speeding up page loads effortlessly. Improve user experience with faster speeds, driving higher traffic, conversions, and sales. Our intuitive interface simplifies store performance management for seamless integration and impactful results. Convert PNG & JPG to Webp for optimized images and use our instant speed app preloading extension for enhanced performance."
canonical_url: "https://shoplist.co/shopify-apps/fastify-speed-seo-optimizer"
markdown_url: "https://shoplist.co/shopify-apps/fastify-speed-seo-optimizer.md"
last_updated: "2026-07-16"
entity_type: "shopify_app"
slug: "fastify-speed-seo-optimizer"
source: "public Shopify app profile allowlist"
---

# Fastify: Speed & SEO Optimizer Shopify App Profile

> ‏Fastify offers all-in-one page speed optimization and SEO tools. Enhance SEO rankings with tailored alt text and image compression, speeding up page loads effortlessly. Improve user experience with faster speeds, driving higher traffic, conversions, and sales. Our intuitive interface simplifies store performance management for seamless integration and impactful results. Convert PNG & JPG to Webp for optimized images and use our instant speed app preloading extension for enhanced performance.

## Quick answer
Fastify: Speed & SEO Optimizer has 0 detected stores in Shoplist. This Markdown profile displays 0 public brand examples; it is not a complete customer list.

## Key facts
- Name: Fastify: Speed & SEO Optimizer
- Monitoring status: Storefront detection limited
- Developer: Sinly
- Developer profile: https://shoplist.co/app-developers/sinly
- Shopify App Store URL: https://apps.shopify.com/fastify-speed-seo-optimizer
- Website: https://fastifyoptimizer.vercel.app
- Launch date: July 4, 2024
- Shoplist category: Search & SEO
- Rating: 5
- Review count: 20

## Pricing summary
Free

Shoplist has not yet found reliable public storefront evidence connecting a Shopify store to this app. This does not mean the app has no users. Some apps are new, admin-only, server-side, theme-independent, or otherwise difficult to detect from public storefront signals.



## Data note
Profile updated: July 16, 2026. This is the profile revision date, not a guarantee that every store was checked on that date.
Public snapshot built: 2026-10-13 12:10:58.485364\+00
Detection metrics refreshed: 2026-10-18 05:10:00.093049\+00
Public app evidence date: 2026-07-16 16:10:50.720988\+00
This generated Markdown profile intentionally exposes only public, stable app-profile fields and a small public app-stack sample from Shoplist. It excludes private contact data, people data, internal scores, crawl provenance, full datasets, and unstable operational fields.

## Related links
- [HTML app profile](https://shoplist.co/shopify-apps/fastify-speed-seo-optimizer)
- [Shopify apps directory](https://shoplist.co/shopify-apps)
- [Shoplist data methodology](https://shoplist.co/data-methodology.md)