01The problem

Every image had a second job: resizing

One visual had to become an Instagram portrait, a story, a LinkedIn post, an X header, and a YouTube thumbnail – then a marketplace listing with rules of its own. Every export was another chance to get a dimension wrong, and the tools that helped either wanted my files on their servers or made me look up every spec myself.

The resize ritual

Nine specs for one image

Example image specs per platform
Platform and preset	Preset	Size	Ratio
InstagramPortrait	Portrait	1080×1350	4:5
InstagramStories / Reels	Stories / Reels	1080×1920	9:16
LinkedInPersonal banner	Personal banner	1584×396	4:1
X (Twitter)Header	Header	1500×500	3:1
YouTubeThumbnail	Thumbnail	1280×720	16:9
PinterestStandard pin	Standard pin	1000×1500	2:3
AmazonProduct listing	Product listing	2000×2000	1:1
MyntraHigh-res zoom	High-res zoom	3000×3000	1:1
OunassProduct shot	Product shot	2000×2500	4:5

Repeat for the next image.

The idea

Pick the destination. Skip the spec.

You tell Dropmatico where an image is going. It already knows the size, the ratio, and the treatment.

One rule from the first version: your images never leave the browser.

How the privacy model works

A hand placing a portrait print at the center of a ring of prints of the same photo, cropped to different sizes. — A frame from the Dropmatico homepage film: one image, every size.

34 platforms, 95 presets, already measured

Each platform and its preset count, as listed in the app.

Social and creative, 15 platforms

Facebook6 presets
Instagram6 presets
X (Twitter)4 presets
LinkedIn7 presets
TikTok2 presets
Pinterest3 presets
Threads4 presets
Snapchat4 presets
YouTube3 presets
Behance4 presets
Dribbble3 presets
Vimeo4 presets
Medium3 presets
Substack4 presets
Notion2 presets

E-commerce, 19 platforms

WhatsApp3 presets
Google Business3 presets
Amazon3 presets
Shopify3 presets
Etsy4 presets
eBay3 presets
Walmart1 preset
Wayfair1 preset
Target Plus1 preset
AliExpress2 presets
Shopee2 presets
Mercado Libre1 preset
Myntra2 presets
Flipkart1 preset
Meesho1 preset
Ajio1 preset
Snapdeal2 presets
Ounass1 preset
Noon1 preset

02My role

One person, every role

There was no team to hand anything to. Each of these was my job, and each one left something you can open today.

Product design
Two engines, live platform previews, per-output edits, mobile, and dark mode.
Open the app (opens in a new tab)
Brand design
The wordmark, palette, type, mascot, and the brand guidelines.
See the brand page (opens in a new tab)
UX research
Measuring every platform’s image specs, comparing 20 tools head to head, and listening to users.
Browse the presets (opens in a new tab)
- Etsy,1200×160Mini shop banner
- eBay,1280×290Store billboard
- Amazon,3000×600Storefront hero banner
- Ajio,1117×1400Standard product image
UX writing
Every label, empty state, error, and guardrail.
Try the editor (opens in a new tab)
- 7 sizes haven’t been adjusted
  Wait, I’ll check
  Ok, continue
- Your line-up is looking good.
- Maximum 16 sizes reached.
Front end
A canvas editor for crop, rotate, filters, and backgrounds that runs entirely in the browser.
Try the editor (opens in a new tab)
Back end
An architecture that needs almost none: static hosting, prerendered pages, and no image servers.
See how it works (opens in a new tab)
Your browser
ReadEditCompressZip
Your images: never sent
The serverStatic pages
Marketing site
Homepage, features, pricing, security, and how-it-works pages.
Visit the site (opens in a new tab)
Blog and help center
17 blog posts and 17 help articles: guides, benchmarks, and release notes.
Read the blog (opens in a new tab)
SEO and AI search
99 URLs, structured data, an llms.txt file, and a robots.txt that welcomes AI crawlers by name.
See a comparison page (opens in a new tab)
Launch
The LinkedIn announcement, the Product Hunt page, launch graphics, a launch video, and the launch-day replies.
See the launch

03The process

How I worked with AI

AI didn’t replace the decisions. It made it possible for one person to carry them out. Every feature went through the same loop.

Decide
Set the bar: what it must do, who it’s for, and what it must never do.
On this pageThe rule from the first version: your images never leave the browser
Brief
Give the tool the context, the constraints, and an example of good.
Review
Test the flows and check the details: the code, the copy, and the pixels.
On this pageThe export guardrail, and the other details I sweated
Ship and listen
Release it, then let real feedback choose the next loop.
On this pageOne user’s email, shipped as Keep original size

My AI team

Four main tools, each with a clear job. One person making the calls.

Building
Claude Code
The code behind the editor, the export, and the website. I described the behavior and the edge cases, then reviewed every change before it shipped.
Thinking and writing
Claude
A sparring partner for structuring problems and weighing trade-offs, and a first draft for copy that I cut down to the product’s voice.
Operations
Claude Cowork
The file- and document-heavy work around the product, the kind that usually needs a team of its own.
Visuals
Figma Weave
Generated visuals, directed and selected by me, alongside other AI tools.
Product owner and editor
Me
- Taste
- Trade-offs
- The “no”
Deciding what to build, setting the bar, and reviewing every output before it shipped.

I owned the taste, the trade-offs, and the “no”. That last one mattered most.

04The product

One image, every platform – or every image, one platform

Two engines share one canvas. Pick the one that fits the job; either way it’s one pass to resize, compress, and convert.

Single Image Editor

One to many

Drop one master and pick up to 16 destinations. Every output previews live inside its own platform frame and keeps its own crop, filter, rotation, and background. One ZIP comes back, sorted by platform and named by size.

The same editor in dark mode, with a yellow Start Optimising button. — Drag to compare light and dark mode.

Dropmatico Single Image Editor in light mode: one brochure image previewed as eight platform outputs, with the preset sidebar. — Drag to compare light and dark mode.

dropmatico-export.zip8 files

DROPMATICO/
- Instagram/JPEG/
  - instagram_portrait_1080x1350.jpg
  - instagram_square_1080x1080.jpg
  - instagram_stories_reels_1080x1920.jpg
- LinkedIn/JPEG/
  - linkedin_landscape_1200x627.jpg
- X_(Twitter)/JPEG/
  - x_(twitter)_header_1500x500.jpg
- YouTube/JPEG/
  - youtube_thumbnail_1280x720.jpg
- Pinterest/JPEG/
  - pinterest_standard_pin_1000x1500.jpg
- Substack/JPEG/
  - substack_post_header_1456x816.jpg

Every file at the exact pixel size of its preset.

Bulk Image Processor

Many to one

Drop up to 16 images and pick one destination. They all get the same treatment and come back in one ZIP, with their original file names kept.

Dropmatico Bulk Image Processor with eight images, each previewed as a 1080×1080 Instagram square, under the heading “Your line-up is looking good.”

Your file: freshworks-standee.jpg
In the ZIP: DROPMATICO/Instagram/JPEG/; freshworks-standee-instagram_square_1080x1080.jpg

16 outputs per master
16 images per batch
100MB per file
1×–5× export scale
JPEG, PNG, WebP
10 filters
6 custom sizes
Free today

Mobile

The same engine, in a phone’s browser

Choose sizes, edit and remix, then prepare the export, without installing anything.

Dropmatico on a phone: choosing Instagram sizes, with Portrait, Square and Stories / Reels selected. — Choose sizes

Dropmatico on a phone: editing the Instagram Stories crop, with a Prepare for export button. — Edit and remix

05Craft

Details I sweated

Small decisions decide whether a tool feels trustworthy: what it asks, what it remembers, and what it never does.

A guardrail, not a wall

Export sizes you haven’t touched and Dropmatico asks first. The dialog names each size, says what will happen, and offers two plain choices: “Wait, I’ll check” or “Ok, continue.”

Dialog reading “7 sizes haven’t been adjusted”: the listed sizes have no canvas edits and will export with the default framing, with the buttons “Wait, I’ll check” and “Ok, continue”.

Every output keeps its own edits

Golden Hour on the story, untouched everywhere else. Each preset remembers its own crop, zoom, rotation, filter, and background.

The 10 filters

Vivid
Matte
Noir
Golden Hour (applied to the story)
Arctic
Velvet
Fade
Punch
Dusk
Crisp

Dropmatico editor showing the 1080×1920 Instagram Stories crop with the Golden Hour filter applied.

Keep original size

Built from a user’s email

A user wrote in: their photos were already the right size and only needed a new format and compression. The toggle shipped 10 days after the email landed.

Read the release note

Dropmatico’s canvas in Keep original size mode: freshcaller-brochure.jpg at its uploaded 1902×1386, above “Ready to optimise.” and “Your image keeps its uploaded size.”

The sidebar toggle, switched from Resize to Keep original size.

Dropmate, a helper that stays on your device

It matches your question by keyword and replies with answers I wrote. It runs entirely in the browser, with no backend, so your questions stay on your device.

Meet Dropmate

Dropmate’s chat panel: a greeting, “I’m Dropmate, Dropmatico’s assistant. Tell me where you’re shipping and I’ll help you get there.”, above suggested questions such as “Does Dropmatico see my photos?”

Privacy as architecture

Your files. Your machine. Your control.

Images are read, edited, compressed, and zipped inside your browser tab – Canvas, the File API, and WebAssembly for HEIC – then handed back as one download. No account and no image server, which is also why it can be free today.

Check it yourself

Open DevTools and choose Network.
Drop an image and export it.
Look through the requests: none of them carries your image.

Read the security page Where do my images actually go?

06Brand

A brand built from zero

A name needs a face. I built the system from scratch: a wordmark, a two-tone palette with one electric accent, a display face with a second voice, a mascot, and the rules that keep it consistent.

Wordmark

Clear space = D, the cap height

Wordmark and Dropmark: charcoal on light, cream on dark. Below 80px wide, the Dropmark replaces the wordmark.

Mascot

Dropmate, the mascot, also fronts the help assistant.

Cream
#EAEAD3
Page in light mode, type in dark mode
Charcoal
#1A1A1A
Text, buttons, and dark mode
Electric yellow
#FFFF1E
The accent in dark mode
Olive
#575700
The accent in light mode

Charcoal on cream: 14.3:1. Olive on cream: 6.2:1.

Type

Drop.
Pick.
Done.

Ojuju 600 for headlines
Ojuju 300 at 70% for the second voice
Inter for everything else

The launch kit

Five gallery graphics, a launch video, and an interactive demo.

Watch the launch video Try the interactive demo

07Content and SEO

99 pages that do the explaining

A tool nobody can find doesn’t get used. So the site answers the questions people search for, and the ones they ask AI assistants: guides, comparisons, help articles, and pages for each kind of user.

URLs in the sitemap: 99
Blog posts: 17
Help articles: 17
“Built for” pages, one per kind of user: 23
Head-to-head comparisons: 20

A sample of the 99 pages: comparisons, persona pages, help articles, guides, and release notes.

Built for search and AI answers

Structured data on every page type
Prerendered HTML for every route
An llms.txt file and AI crawlers welcomed by name

Allowed by name in robots.txt

GPTBot
ChatGPT-User
OAI-SearchBot
ClaudeBot
anthropic-ai
Claude-Web
PerplexityBot
Google-Extended
CCBot
Applebot-Extended
Amazonbot
Bytespider

dropmatico.com/robots.txt, excerpt

# … Blocking AI crawlers blocks
# recommendations. …
…
# OpenAI (ChatGPT)
User-agent: GPTBot
Allow: /
…
# Anthropic (Claude)
User-agent: ClaudeBot
Allow: /
…
# Perplexity
User-agent: PerplexityBot
Allow: /

Open robots.txt Open llms.txt

08Launch

Launched with no paid promotion

I announced Dropmatico on LinkedIn on 22 May 2026, then launched it on Product Hunt on 15 June. Here’s the run-up, the receipts, and what people said.

Road to launch

Public, dated milestones, from the first blog post to launch day.

26 December 2025
First post on The Drop Feed, the Dropmatico blog
24 April 2026
Keep original size ships, built from a user’s email
30 April 2026
Dropmate, the on-device help assistant, ships
11 May 2026
robots.txt welcomes AI crawlers by name
22 May 2026
LinkedIn announcement
15 June 2026
Product Hunt launch: #15 Day Rank

Product Hunt, 15 June 2026

The listing, and Product Hunt’s own stats for the launch

Dropmatico’s Product Hunt listing: the app icon, “Drop. Pick. Done.”, and 125 followers.

Product Hunt launch stats: #15 position, 110 points, and 14 comments.

Design Tools
Productivity
E-Commerce
Free

See the launch on Product Hunt

LinkedIn announcement, 22 May 2026

The post’s numbers, as LinkedIn shows them

LinkedIn post stats: 26 reactions, 4 comments, 2 reposts, and 1,567 impressions.

Reactions: 26
Comments: 4
Reposts: 2

Read the post on LinkedIn

Original Product Hunt Launch Points chart for 15 June: points climb from about 52 just after midnight to 110 by the end of the day. — Points climbed from 52 in the first minutes to 110 by midnight, Pacific time.
Show the dataHide the data
Product Hunt’s Launch Points on 15 June 2026, read off its chart, so times are within about 2 minutes. Times are PDT.
Time (PDT) Points
About 12:04 AM 52
About 12:16 AM 53
About 12:26 AM 55
About 12:38 AM 56
About 12:47 AM 59
About 12:56 AM 64
About 1:12 AM 66
About 2:00 AM 68
About 2:10 AM 70
About 2:30 AM 70
About 2:35 AM 71
About 2:52 AM 72
About 2:57 AM 73
About 3:10 AM 75
About 3:32 AM 77
About 4:04 AM 77
About 4:33 AM 79
About 5:02 AM 80
About 5:34 AM 82
About 5:37 AM 82
About 5:44 AM 87
About 5:53 AM 87
About 5:58 AM 88
About 6:22 AM 88
About 6:28 AM 89
About 7:40 AM 92
About 7:47 AM 94
About 7:53 AM 94
About 8:43 AM 95
About 8:50 AM 96
About 9:24 AM 98
About 9:33 AM 99
About 11:11 AM 99
About 11:16 AM 100
About 11:29 AM 100
About 12:06 PM 102
About 1:51 PM 103
About 2:54 PM 104
About 9:00 PM 105
About 9:25 PM 106
About 9:47 PM 106
About 9:56 PM 108
About 11:11 PM 108
Midnight 110
(opens in a new tab)
The original, from Product Hunt’s launch analytics.

Original Product Hunt Comments chart for 15 June: comments arrive from 4 AM, with a burst of replies around 11 AM, reaching 11 by mid-afternoon. — 11 comments on launch day: 6 from the community and my 5 replies, sent between 11:11 and 11:27 AM.
14 comments in total; 11 on launch day.
Show the dataHide the data
Every comment posted on 15 June 2026, in order. Times are PDT.
Time (PDT) From Comments so far
4:02 AM Community comment 1
4:50 AM Community comment 2
5:54 AM Community comment 3
5:56 AM Community comment 4
7:49 AM Community comment 5
11:11 AM My reply 6
11:12 AM My reply 7
11:17 AM My reply 8
11:20 AM My reply 9
11:27 AM My reply 10
3:46 PM Community comment 11
(opens in a new tab)
The original, from Product Hunt’s launch analytics.

Source: Product Hunt. Points redrawn from my launch-analytics screenshot; comment times from the listing. Times are PDT.

What people said on launch day

Comments from the launch, word for word.

I like that you’re treating resizing, compressing, and converting as one workflow rather than separate utilities.
Sarvesh Chidambaram, memion Product Hunt (opens in a new tab)
The privacy angle is underrated. Keeping files on the user’s device instead of uploading them to servers will matter for many businesses.
Marianna Tymchuk, Stripo.emailon Product Hunt (opens in a new tab)
The client-side processing approach is a huge win. Faster workflows and better privacy are a great combination.
Roman Burdyga, Stripo.emailon Product Hunt (opens in a new tab)
The marketplace presets are a smart detail. Social sizes are easy to find, but Amazon, Etsy, Noon, Flipkart, and Shopify images are where the prep work usually gets annoying fast.
Farrukh Button Product Hunt (opens in a new tab)

09What’s next

What I learned, and what’s next

The bottleneck moved from building to judging
When one person can ship this much, the scarce thing is judgment: deciding what good looks like, and checking everything against it.
Back to How I worked with AI
Users are the fastest loop
One email from a user became the Keep original size toggle. The next loop started from real feedback, not a guess.
Back to Details I sweated
Distribution is part of the product
I gave content, SEO, and the launch the same care as the product: 99 pages written to be found, one announcement, and my own replies on launch day.
Back to Launched with no paid promotion

Requested on launch day

Next: Dropmatico inside AI workflows

Launch-day comments asked for an agent plugin, so Dropmatico could work inside an AI workflow. It’s on the list, not built.

…I would want my Claude Cowork to be able to access the plugin so I don’t have to convert files…

Peter Shu, Diracon Product Hunt

Your next image is one drop away.

Free today. No account, no upload.

Try Dropmatico See the Product Hunt launch More of my work: case studies

Time (PDT)	Points
About 12:04 AM	52
About 12:16 AM	53
About 12:26 AM	55
About 12:38 AM	56
About 12:47 AM	59
About 12:56 AM	64
About 1:12 AM	66
About 2:00 AM	68
About 2:10 AM	70
About 2:30 AM	70
About 2:35 AM	71
About 2:52 AM	72
About 2:57 AM	73
About 3:10 AM	75
About 3:32 AM	77
About 4:04 AM	77
About 4:33 AM	79
About 5:02 AM	80
About 5:34 AM	82
About 5:37 AM	82
About 5:44 AM	87
About 5:53 AM	87
About 5:58 AM	88
About 6:22 AM	88
About 6:28 AM	89
About 7:40 AM	92
About 7:47 AM	94
About 7:53 AM	94
About 8:43 AM	95
About 8:50 AM	96
About 9:24 AM	98
About 9:33 AM	99
About 11:11 AM	99
About 11:16 AM	100
About 11:29 AM	100
About 12:06 PM	102
About 1:51 PM	103
About 2:54 PM	104
About 9:00 PM	105
About 9:25 PM	106
About 9:47 PM	106
About 9:56 PM	108
About 11:11 PM	108
Midnight	110

Time (PDT)	From	Comments so far
4:02 AM	Community comment	1
4:50 AM	Community comment	2
5:54 AM	Community comment	3
5:56 AM	Community comment	4
7:49 AM	Community comment	5
11:11 AM	My reply	6
11:12 AM	My reply	7
11:17 AM	My reply	8
11:20 AM	My reply	9
11:27 AM	My reply	10
3:46 PM	Community comment	11

Dropmatico: Designed, built, and launched solo – with AI as my team

The resize ritual

The idea

3434 platforms, 9595 presets, already measured34 platforms, 95 presets, already measured

Social and creative · , 15 platforms

E-commerce · , 19 platforms

Product design

Brand design

UX research

UX writing

Front end

Back end

Marketing site

Blog and help center

SEO and AI search

Launch

Decide

Brief

Review

Ship and listen

My AI team

Claude Code

Claude

Claude Cowork

Figma Weave

Me