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Scale VS KeptPDF

Compare Scale VS KeptPDF and see what are their differences

Scale

Get human tasks done with just one line of code.

Rating
0 reviews
Alternatives Is it good?
KeptPDF

Redact, edit, OCR, and sign PDFs entirely in your browser. The file never leaves your device. Free, no account needed.

Rating
0 reviews
Pricing
Freemium $29 / Monthly (Pro, 1 user)
Alternatives Is it good?
you.bot
One API for 80+ AI models — LLM, image, video & music — priced up to 80% below the official APIs. Pay only for successful calls; failed runs refunded; credits never expire. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, Scale seems to be more popular. It has been mentioned 10 times since March 2021.

social mentions
10 vs 0
Productivity popularity
100% vs 0%
alternatives listed
221 vs 20

Base details

Website, pricing, platforms and company facts side by side.

Scale
KeptPDF
Website scale.com keptpdf.com
Pricing
Official pricing
Freemium $29 / Monthly (Pro, 1 user) Official pricing
Company — Startup from the United States · 2026
Listed in
Transcription Audio Transcription Podcast Production Video Maker +1
PDF Tools Pdf Redaction OCR PDF Editor PDF Security & Privacy PDF Readers And Editors AI Tools +5

About Scale and KeptPDF

In their own words, as submitted to SaaSHub.

Scale
KeptPDF

No description of Scale yet.

KeptPDF is a PDF toolkit that runs entirely in your browser. Nothing uploads: every tool runs on your own device, so the document never touches a server. What it does: Redaction that auto-detects names, SSNs, phone numbers, addresses, and dates, then removes the underlying text instead of drawing...

Read more about KeptPDF

Features and specs

What each product offers, as listed by its team.

Scale 5 features
KeptPDF 5 features
  • Scalability
    Scale's platform is designed to handle large volumes of data efficiently, making it ideal for businesses that need to scale up their data processing capabilities quickly.
  • Data Annotation Quality
    The platform offers high-quality data annotation services, ensuring that the data used in machine learning models are accurate and reliable.
  • Versatility
    Supports a wide range of data types including images, videos, text, and more, making it versatile for various applications across different industries.
  • Speed
    Scale's automation and workflows are designed to process and annotate data quickly, which can significantly speed up the development cycle of AI projects.
  • Customization
    Businesses can create tailored workflows and quality assurance mechanisms to fit their specific needs, enhancing the effectiveness of their data operations.

Possible disadvantages

  • Cost
    Scale's services can be expensive, particularly for smaller businesses or startups with limited budgets.
  • Complexity
    The platform may have a steep learning curve for new users due to its wide range of features and capabilities.
  • Dependency
    Relying heavily on an external platform like Scale could create dependency issues, impacting flexibility and control over one’s own data processes.
  • Data Privacy
    Using an external service to handle data could raise concerns about data privacy and security, depending on the sensitivity of the data.
  • Integration
    There may be challenges in integrating Scale with existing systems and workflows, requiring additional resources and time.
  • Simple PDF Editing
    KeptPDF offers straightforward tools for editing, merging, splitting, and converting PDF files, making it accessible for users who need quick document management without a steep learning curve.
  • Web-Based Accessibility
    Being a web-based tool, KeptPDF can be accessed from any device with an internet connection, eliminating the need for software installation and allowing use across different operating systems.
  • Multiple File Format Support
    The platform supports conversion between PDF and various other file formats, offering flexibility for users who work with documents in different formats.
  • No Installation Required
    Since it operates in a browser, users can save storage space on their devices and avoid compatibility issues that sometimes arise with desktop software installations.
  • Quick Processing
    KeptPDF is designed to process PDF tasks efficiently, allowing users to complete common document tasks like compression or conversion in a relatively short amount of time.

Analysis

An editorial look at what each product does well and who it suits.

Scale
KeptPDF

Overall verdict

  • Scale AI is generally considered a reliable and effective solution for companies needing scalable data annotation services. Customers appreciate its focus on quality and the variety of services offered, making it a top choice for enterprises looking to enhance their AI capabilities.

Why this product is good

  • Scale AI is considered a good choice for businesses and developers looking for high-quality data annotation services, which are crucial for training machine learning models. Scale provides efficient, scalable solutions with a focus on accuracy, speed, and a wide range of data types, including text, image, and video. The platform integrates seamlessly with existing systems and offers robust security measures to protect customer data. Additionally, Scale AI is known for its extensive quality control processes, which ensure that the annotated data meets high standards required for effective AI model training.

Recommended for

  • Companies developing AI models that require high-quality training data
  • Businesses looking for scalable and efficient data annotation services
  • Developers and data scientists in need of accurate and diverse data types
  • Organizations prioritizing data security and quality control in their ML projects

No analysis of KeptPDF yet.

Videos

Walkthroughs and reviews on video.

Scale 3 videos + Add
KeptPDF 0 videos + Add

BEST SMART SCALES! (2020)

More videos

  • - Top 5 BEST Smart Scale (2020)
  • - Are Body Fat % Scales SCAMS?! | Keltie O'Connor

No KeptPDF videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Scale
KeptPDF
100% 100%
Productivity
0% 0%
0% 0%
PDF Editor
100% 100%
100% 100%
AI
0% 0%
0% 0%
PDF Tools
100% 100%

Questions & Answers

As answered by people managing Scale and KeptPDF.

What makes your product unique?

KeptPDF's answer:

KeptPDF runs entirely in your browser. Your file, and the text inside it, never leaves your device. Not to an AI, not even to us. You can open your browser's network tab and watch: the document bytes never go out.

Most online PDF tools upload your file to a server first, and some "AI redaction" services quietly send your document text to a third-party model. That is the exact risk people are trying to avoid when they redact something.

KeptPDF also does true redaction. The text is removed from the file, not covered with a black box you can copy out later. Every redaction produces a verification certificate you can share with the file.

Why should a person choose your product over its competitors?

KeptPDF's answer:

Three reasons.

Privacy you can verify, not just a promise. Processing happens locally in the browser, so there is no upload step to trust. We do send anonymous usage counts for quota, and we say so plainly, but never your document.

Real redaction with proof. Removed text is permanently gone, and you get a certificate showing the file was checked for leftover extractable text. Automated detection cannot catch everything, so a final human review is still your job, and the tool says that too.

It works on a phone. Most PDF suites assume a desktop. KeptPDF was built and used on a phone first, so redacting a document while you are standing in a hallway actually works.

How would you describe the primary audience of your product?

KeptPDF's answer:

Anyone who has to hand a document to someone else and needs the sensitive parts gone first.

In practice that is solo attorneys and small law firms, accountants and tax preparers, healthcare and records staff handling requests, HR teams, and individuals dealing with their own medical, legal, or financial paperwork.

The common thread is not an industry. It is a person who cannot upload a confidential file to a random website, and who does not have an enterprise IT budget to solve it.

What's the story behind your product?

KeptPDF's answer:

A family member got seriously ill. We spent most days at the hospital, and straight answers were hard to come by, so we leaned on AI tools to make sense of the records, notes, and lab results.

But you cannot paste a medical record into an AI chat. You have to strip the names, the ID numbers, the diagnoses first. And almost every tool we found either wanted to upload the whole file to a server, or "auto-redacted" by sending the document text to an online AI. That was the exact thing we were trying to avoid.

Most of this was happening on a phone, at a bedside. So I built the tool I needed: redaction that runs on the device, works on mobile, and never sends the file anywhere. That turned into KeptPDF, which is now a full PDF suite with over 20 tools, all local-first.

Which are the primary technologies used for building your product?

KeptPDF's answer:

The app is plain JavaScript with no front-end framework, which keeps it fast and keeps the code auditable.

PDF work happens in the browser using pdf.js for rendering and pdf-lib for writing. Text recognition uses Tesseract running as WebAssembly. Password and encryption handling uses a WebAssembly build of qpdf. It is a Progressive Web App, so it installs and works offline.

The thin server side is Node on Vercel, with Postgres for accounts, Stripe for billing, and Resend for email. None of those ever see a document.

Who are some of the biggest customers of your product?

KeptPDF's answer:

KeptPDF is early and independent, and we do not publish customer names. The product is privacy-first by design: we never see your documents, and we do not track who our users are or what they work on. Publishing a client list would sit badly next to that.

The user base today is mostly solo attorneys, small firms, accountants, and individuals handling their own records.

User comments

Share your experience with using Scale and KeptPDF. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Scale no reviews yet
KeptPDF no reviews yet
  • Top Video Annotation Tools Compared 2022
    innotescus.io · Jun 2022

    In this blog, we’ll quickly explore annotation platforms and the features they offer to help improve the video annotation process. We’ll be looking closely at six big names in the video annotation market: Innotescus,...

We have no reviews of KeptPDF yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Scale 10 mentions
KeptPDF 0 mentions
  • Need help
    Hello guys hope everyone is doing well. I just wanted to know how can we create https://scale.com/ this type of hero section in Webflow. I want to create this for a client and if you scroll down the logo section it becomes marquee on... Source: almost 3 years ago
  • ChatGPT is Powered by $15-an-Hour Contractors
    Companies like Tesla literally hired people to stare at pictures all day from their cameras and identify objects, that's how you get the AI to a state where it can learn itself. There's literally multi-billion dollar startups like... Source: over 3 years ago
  • Hack website jumped the shark - 100 strong against this obamanation
    Scale.com doesn't even work. Now my phone is covered in cracks and barbecue sauce. Source: over 3 years ago

View more

Tracking KeptPDF since Aug 2026.

Alternatives to Scale and KeptPDF

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