Public beta founder offer: 50% off your first year
Online proofing for client approvals. One link.
Flatproof gives small studios client proofing software for files, live sites, Figma links, comments, versions, and approvals without seat math.
Google Drive source
Imported from Drive · version actions
Add the proof
Upload a file, import from Drive, or paste a website or Figma link.
Share one link
Clients open the review without becoming another paid seat.
Resolve the next version
Keep comments, approvals, and old versions attached to the work.
Feature gallery
Actual proofing surfaces, not abstract diagrams.
Online proofing is easier to trust when buyers can see the real work surfaces: website feedback, PDF proofing, video comments, Figma review, image markup, and AI-assisted checks.
Google Drive version flow
Import the latest source file, open Drive, or keep the review thread on the same proof.
Figma frame review
Collect comments on Figma work with the same approval and thread flow as files.
Multi-reviewer image proofing
Keep reviewer names, pins, areas, and approval state visible on the proof itself.
Timed video comments
Clients comment on the exact frame instead of sending vague notes in chat.
Live website comments
Review staging or production URLs with pinned feedback and an interact mode.
Page-aware PDF comments
Review long PDFs with page thumbnails, open threads, and comments tied to the right page.
AI-assisted review drafts
Use AI to inspect selected areas, then choose what becomes real feedback.
Review queue
Sort proofs by state and attention needed before delivery gets messy.
Mentions and notifications
Bring the right reviewer back when a comment needs their eyes.
Simple pricing
Pay for storage, not seats.
Invite creators, clients, teammates, and approvers without watching the bill grow with every person.
Free
$0
200MB storage
Solo
$5
per month
Studio
Team$29
per month
Honest comparison
Not better. Just built for a narrower job.
MarkUp.io, Workflow, and Ziflow are strong tools. Flatproof is for small teams that want client proofing, version context, and one flat storage-based bill more than a large review suite.
Flatproof
Us$5/mo Solo · $29/mo Studio
Unlimited creators and reviewers on every plan
Studio is $29/mo total no matter how many people create or review.
Pick Flatproof for focused proofing, share links, versions, approvals, and one flat storage-based bill.
Narrower than a full agency portal.
MarkUp.io
$79/mo Pro
$79/mo for one Pro workspace
A mature visual commenting tool for websites, images, PDFs, and videos.
Pick MarkUp.io if you want a proven all-round review workspace with 500GB on Pro.
Additional Pro workspaces are separate subscriptions.
Workflow.design
$20/seat/mo Standard
$100/mo for 5 creators, or $80/mo billed yearly
The polished website-feedback lane with guided tours, client portals, and video feedback.
Pick Workflow if live websites are the main thing and per-creator pricing is fine.
Version comparison and AI checks are listed as soon.
Ziflow
$199/mo Standard · $329/mo Pro
Standard includes 15 users and 1TB storage; Pro includes 20 users and 2TB, billed annually
A mature online proofing platform with unlimited proofs, unlimited reviewers, campaign reviews, and automation.
Pick Ziflow if you need enterprise-grade proofing, multi-stage workflows, and audit depth.
Priced and scoped for bigger teams.
Pricing checked against public pages on June 9, 2026. MarkUp.io pricing · Workflow.design pricing · Ziflow pricing
Online proofing FAQ
Proofing is the category. Review is the moment.
Searchers use a mix of proofing, feedback, review, approval, annotation, and markup. Flatproof should rank for the category and still speak like a client-friendly tool.
Is Flatproof online proofing software or a review tool?
Flatproof is online proofing software. Review is the action clients take inside the proofing workflow: they open one link, leave visual feedback, discuss changes, and approve the latest version.
Do clients need an account to review a proof?
No. Clients and reviewers can open a share link, leave comments, and approve work without becoming paid seats.
What can teams proof in Flatproof?
Flatproof supports client proofing for images, PDFs, videos, audio, live websites, Figma links, presentations, and other uploaded files.
How is Flatproof different from MarkUp.io and Workflow.design?
Flatproof focuses on smaller studios that want proofing, comments, versions, approvals, unlimited reviewers, and storage-based pricing without a broad agency portal or per-creator seat math.
Can Flatproof collect website feedback?
Yes. Add a live website proof, share it with the client, and keep website feedback, pinned comments, versions, and approvals in the same project as files and Figma work.
Start with one real client proof.
Upload a file, share the link, and see whether the feedback gets cleaner.