business

Verdict

Submitted 8/2/2026, 4:04:49 PM · Completed 8/2/2026, 4:09:59 PM

5.5
pivot
The idea

How to make small djvu files? (How to optimize djvu files) (Background foreground separation)

Pain point
The user needs to create small, color djvu files without using web-based services.
Who has this problem
Users who need to store and share documents in djvu format while minimizing file size.
Contradiction (TRIZ)
wants smaller file sizes but cannot sacrifice image quality or use online tools
Ideal final result
Ability to create small, high-quality color djvu files efficiently without relying on web-based services.
Suggested solution
Develop a software tool that integrates advanced compression algorithms with background-foreground separation techniques specifically for djvu format. This tool would allow users to optimize color images while retaining quality, thus reducing file sizes significantly and enabling offline use.
Show original source text →
is there anyone that knows how to make small djvu files with colors. I have been wondering this for ages. If you have done any research on this topic you will find alot of djvu files mostly on wikicommons (before 2016) that are indeed very small like 1-10MB. I am wondering how to make them without the usage of web-based services. You can create them with black and white color schemes, this results in very small sizes. But the problem is that they look ugly on documents that have colors. (cjb2) So there are another way of creating them and that way is using the tool c44. The problem with c44 is that it result in 20MB files. Witch is a waste of storage. I know that is possibility to create them smaller. But the question is how? How to create them smaller?. Is there any scripts tools to make the smaller. I Know that there exist a tool called pdf2djvu but the problem is that it also makes big file sizes. Or most of the time even bigger file sizes. Examples of small djvu files https://en.wikisource.org/wiki/File:Poems_Osgood.djvu https://en.wikisource.org/wiki/File:Some_New_Philosophical_Views.djvu https://en.wikisource.org/wiki/File:Indoor_and_Outdoor_Gymnastic_Games.djvu
TRIZ inventive level: 3/5· Principles: parameter changes, mechanical interaction
Synthesis verdict
**Pivot** The idea of creating a tool for small DJVU files with colors faces significant challenges, primarily in monetization and scalable demand. While technically feasible for a small team with the right expertise, the lack of a clear revenue model and a narrow target market make the venture risky. The competitive advantage of filling a niche in DjVu compression is notable, but this must be paired with a viable business strategy. Technical optimization is possible but requires deep compression knowledge. References to small DJVU files on Wikisource suggest feasibility, but reverse-engineering these techniques could be time-consuming. The tool's defensibility hinges on ease of use and configurable quality-size trade-offs, differentiating it from command-line tools like c44 and pdf2djvu. **Pivot Suggestion:** Develop the tool with a clear, open-source first strategy, targeting a specific subset of the niche market (e.g., academic archivists) and explore monetization through premium support, customization services, or sponsored development of specific features.

Strengths

  • Technical feasibility with the right expertise (VIABILITY)
  • Clear competitive advantage in a niche (COMPETITIVE)
  • Potential for defensibility through ease of use and customization (COMPETITIVE)
  • Existence of a proven, albeit small, demand (VIABILITY, COMPETITIVE)

Weaknesses

  • Lack of clear monetization strategy (MONETIZATION)
  • Extremely niche market with limited scalable demand (RISK, MONETIZATION)
  • Dependence on reviving/optimizing somewhat obsolete technology (RISK, VIABILITY)
  • High technical barrier for non-expert teams (VIABILITY)

Best angle

Develop an open-source, easy-to-use DJVU compression tool targeting academic/archival niches, with monetization through premium services/support.

Panel verdicts

Competition

nvidia/nemotron-3-nano-omni-30b-a3b-reasoning

6.0

A focused, easy‑to‑use script or library that leverages modern JPEG2000 region‑of‑interest compression and color‑aware encoding can reliably produce sub‑10 MB, color DjVu files, filling a niche not well served by existing command‑line tools.

Current solutions for creating DjVu files are fragmented. The djvulibre suite includes the cjb2 encoder, which produces small black‑and‑white files but limited color support, and the c44 encoder, which uses JPEG2000 and yields larger 20 MB files. Tools such as pdf2djvu or ImageMagick wrappers simply convert other formats and rarely achieve the sub‑10 MB size with color that the examples on Wikisource demonstrate. Commercial or web‑based converters (e.g., Smallpdf, ILovePDF) exist but require internet access and do not expose fine‑grained control over compression parameters. A dedicated, open‑source command‑line utility or library that combines modern JPEG2000 region‑of‑interest encoding, adaptive entropy coding, and color‑profile handling could consistently generate small, high‑quality DjVu files without relying on external services. This would address the specific pain point of users who need compact, color‑rich DjVu archives for archival or publishing purposes. While the underlying compression algorithms are not new, packaging them into an easy‑to‑use, scriptable tool with configurable quality‑size trade‑offs provides a clear, defensible differentiation that is hard for existing generic tools to match. The market is niche but real, consisting of librarians, academic authors, and digital archivists who value small file sizes and offline processing. Durability hinges on continued maintenance of the tool and adaptation to newer DjVu specifications, which is plausible given the active djvulibre community.

Viability

nvidia/llama-3.3-nemotron-super-49b-v1(fallback #1)

6.0

Success hinges on the team's ability to optimize color DJVU compression, a niche challenge with limited open-source solutions.

The challenge of creating small DJVU files with colors is technically feasible for a solo or 2-person team within 4-12 weeks, but success heavily depends on the team's prior expertise in image compression algorithms and DJVU format specifics. The easy part involves leveraging existing open-source tools (like c44, pdf2djvu) for a baseline, while the hard part is optimizing for color without ballooning file sizes, likely requiring custom scripting or tweaking compression parameters. References to small DJVU files (e.g., Wikisource examples) suggest it's possible, but reverse-engineering or researching those specific compression techniques could be time-consuming. A team without deep compression knowledge might struggle to achieve <10MB with acceptable quality within the timeframe.

Risk

nvidia/llama-3.3-nemotron-super-49b-v1

2.0

Niche problem with little scalable demand and overshadowed by more versatile formats like PDF.

The idea's viability is severely limited by the niche nature of the problem, lack of scalable demand, and the existence of alternative formats (like PDF) that are more widely supported and optimized. The pursuit of minimizing DJVU file sizes for color documents without web-based services hinges on reviving or developing obsolete technology (c44's inefficiency, cjb2's color limitation), which is costly and unlikely to yield significant size reductions to justify the effort. Moreover, the target audience for such a specific file format optimization is extremely narrow (possibly only certain archival or academic communities), and these groups may already have workarounds or not perceive the issue as critical enough to pay for a solution. Regulatory factors and platform risks are less immediate threats compared to the fundamental challenges of demand and technological limitations.

Market

meta/llama-3.3-70b-instruct

This agent failed to return a verdict (gave up after 1 attempts: ). The synthesis ran with the remaining agents.

Monetization

mistralai/mistral-nemotron(fallback #1)

3.0

The idea needs a well-defined revenue model to be viable as a business venture.

The idea lacks a clear revenue model or monetization strategy. While there is a niche demand for small, high-quality DJVU files, the proposed solution does not outline a concrete pricing structure, conversion path, or unit economics. The focus is primarily on the technical challenge of file size reduction rather than how to capture value from this service. Without a clear plan for monetization, such as offering a premium tool, subscription service, or consulting, the business potential remains unclear. Additionally, the market for this specific tool may be too small to sustain a profitable venture.

Synthesized by nvidia/llama-3.3-nemotron-super-49b-v1 (fallback #4) · 25.4s