Mochify vs TinyPNG: An Honest Comparison

The short version

Pick TinyPNG if you compress lots of small web images and value a household-name tool with a huge plugin ecosystem. Pick Mochify if your files are bigger than 5MB, you want to describe the result instead of accepting automatic output, you need capabilities TinyPNG doesn't have (background removal, video, PDF tooling, JPEG XL through the API), or you're wiring image processing into an AI agent or build pipeline.

Neither tool asks much learning of you, for opposite reasons. TinyPNG removes every decision; Mochify removes the settings instead, and you type the outcome you want in plain English. Arguably "make these web-ready, under 300KB each" is less to learn than discovering, mid-job, which needs the automatic answer can't cover.

Where TinyPNG wins

Credit where due. TinyPNG has real advantages, and pretending otherwise would make everything else on this page less believable.

• Brand trust and scale. Tinify's live counter shows more than 6.5 billion images compressed, and its customer wall includes Airbnb, Microsoft, and Samsung. When you recommend TinyPNG to a client, nobody asks what it is.
• Frictionless free sessions. The free tool takes 20 images per session with no signup. Mochify's no-signup session allows 3 images (25 per month with a free account). For batch-compressing small web assets without an account, TinyPNG is more generous.
• Cheapest unlimited web compression. Tinify has published pricing of roughly $39 per year for Web Pro, which removes compression limits entirely and raises the file cap to 75MB. If your only need is high-volume web compression in a browser tab, that undercuts Mochify's Seller tier, and we're not going to pretend otherwise. Web Ultra (~$149/yr) goes to 150MB files, above Mochify's 75MB ceiling.
• A big, mature ecosystem. Official WordPress and Figma plugins, six official API client libraries, direct save to Amazon S3 and Google Cloud Storage, around 50 community integrations, and a separate image CDN product. (One caveat: the well-known Photoshop plugin is officially deprecated, per Tinify's own notice.)
• A generous API free tier. 500 free compressions per month, no payment method required.

Where Mochify wins

One thread runs through this list: Mochify was built in the age of AI, and most of what separates it from TinyPNG is AI doing work that settings panels and manual editing used to do. A language model interpreting your intent, saliency models deciding where to crop, AI background removal on every tier, and surfaces designed for AI agents to call directly. Worth saying plainly: what AI can usefully do inside an image pipeline is still in its early days, and this list is the tip of the iceberg, not the finished shape of the product.

• Free tier handles real photos. TinyPNG's free tool caps files at 5MB; a modern phone photo or any camera JPEG regularly exceeds that. Mochify's free tier accepts files up to 20MB (75MB on paid tiers).
• You control the result. TinyPNG exposes no quality settings anywhere; the web tool and API are fully automatic (we verified the complete API reference: there is no quality parameter). That's a feature for simplicity and a limitation the moment you need something specific. Mochify's primary interface is Magic Flow: describe the outcome ("convert these to AVIF, keep them under 300KB, strip all metadata") and a language model parses the request before the C++ engine executes it.
• Broader format and capability coverage. TinyPNG compresses and converts AVIF, WebP, JPEG, and PNG, with JPEG XL available only in its in-browser converter, not the API. Mochify treats JPEG XL as a first-class format on every surface, outputs JPEG through Google's jpegli encoder for better quality-per-byte, and accepts HEIC uploads. Beyond images: background removal is included on every Mochify tier including Free (TinyPNG has none), Mochify's web app converts and compresses video entirely in the browser (TinyPNG has no video tooling), and Mochify's PDF utility extracts pages as images and splits multi-page PDFs (no TinyPNG equivalent). Our JPEG XL conversion guide and jpegli deep-dive cover the format side in detail.
• Metadata control on every surface. TinyPNG strips metadata by default and lets you preserve copyright, creation date, or location only through the API, opt-in, JPEG only. With Mochify you state metadata handling in the prompt on any surface ("compress these and strip all metadata"), which makes the behavior explicit where you can see it.
• An official CLI and MCP server. For automation and AI-agent workflows, this is the structural difference; the developer section below covers it.

Privacy: "deleted within 48 hours" vs wiped immediately

TinyPNG is honest about its retention, and its terms are clearly written: "Images uploaded to the Service are temporarily stored, optimized and deleted within 48 hours," with log entries, including your IP address and a fingerprint of the transferred file, "deleted within 31 days" (Tinify's terms). Tinify B.V. is a Dutch company and states it is GDPR compliant, though its terms also note it "uses data processors from the EU, US and Australia," with hosting on Google Cloud Platform.

That's a reasonable policy. It's also a different architecture from ours. Mochify streams images and PDFs into the encoder in RAM at api.mochify.app and wipes them immediately after encoding: no disk writes of the source, no logs containing file data, nothing waiting 48 hours for a scheduled deletion. There's one carefully bounded exception: Mochify's hosted MCP server holds the compressed output (never the original) behind a short-lived download URL for up to five minutes so an AI agent can retrieve it; we documented that trade-off publicly when we made it. Video never touches our servers at all; it's processed entirely in your browser.

The practical distinction: "deleted within 48 hours" is a retention policy; "never written to disk" is an architecture. For everyday web images, either is fine. For client work under NDA, unreleased products, or anything where "a copy exists somewhere for two days" is an uncomfortable sentence, the difference matters. Our privacy-focused compressor comparison scores the wider field on exactly this axis, and if you specifically need an EU-hosted, GDPR-first workflow, we've written up the European alternative angle separately.

Pricing compared honestly

Read that table both ways. If you compress hundreds of sub-5MB images a month in a browser and need nothing else, TinyPNG Web Pro is the better deal, full stop. Mochify's tiers price in the capabilities rather than raw compression volume: every tier, including Free, carries Magic Flow, background removal, MCP and API access, and the full format set. TinyPNG meters its API per compression ($0.009 each after the free 500, with resize and convert each counting as an extra compression); Mochify's API and MCP draw from the same monthly quota as everything else, with no per-operation billing.

TinyPNG's published prices were checked against Tinify's own pages in July 2026 but are theirs to change; verify current figures on their site before deciding on price alone.

Developers and AI agents: API, CLI, MCP

TinyPNG's REST API is mature and well-documented, with official client libraries for Ruby, PHP, Node.js, Python, Java, and .NET, plus smart-crop resizing and direct S3/GCS output. For traditional server-side integration, it's a solid choice with over 50,000 companies using it.

The gap appears at the automation and AI-agent layer. As of July 2026, Tinify offers no official CLI and no official MCP server; the TinyPNG CLIs and MCP servers that exist are community projects, listed in Tinify's own third-party directory without the "Official" badge its WordPress and Figma plugins carry. That means no vendor support, no guaranteed upkeep, and third-party code between your API key and their service.

Mochify ships both as first-party surfaces. The mochify CLI installs via Homebrew and doubles as a local MCP server (mochify serve) that returns file paths rather than image bytes, so image data never enters an AI agent's context window. A hosted MCP server at mcp.mochify.app covers the no-install case. Both authenticate with a one-time mochify auth login, and Magic Flow prompts work across all of them, so an agent can request "compress these screenshots for the docs site" without anyone mapping parameters. The full architecture, including token costs and worked examples, is in our MCP server guide.

If your image processing lives inside Claude Code, Cursor, or an agent framework, this is currently the clearest difference between the two products.

Cheat sheet: Mochify vs TinyPNG at a glance

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